<img align="middle" alt="begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell p left parenthesis x right parenthesis end cell equals cell 2 x cubed plus 5 x squared minus 12 x minus 6 end cell row cell p left parenthesis 2 right parenthesis end cell equals cell 2 open parentheses 2 close parentheses cubed plus 5 open parentheses 2 close parentheses squared minus 12 open parentheses 2 close parentheses minus 6 end cell row blank equals cell 16 plus 20 minus 24 minus 6 end cell row blank equals 6 end table end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mtable columnspacing=¨0px¨ columnalign=¨right center 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<img align="middle" alt="begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell p left parenthesis x right parenthesis end cell equals cell 2 x cubed plus 5 x squared minus 12 x minus 6 end cell row cell p left parenthesis negative 3 right parenthesis end cell equals cell 2 open parentheses negative 3 close parentheses cubed plus 5 open parentheses negative 3 close parentheses squared minus 12 open parentheses negative 3 close parentheses minus 6 end cell row blank equals cell negative 54 plus 45 plus 36 minus 6 end cell row blank equals cell negative 39 end cell row blank blank blank end table end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mtable columnspacing=¨0px¨ columnalign=¨right center 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<img align="middle" alt="begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell p left parenthesis x right parenthesis end cell equals cell 2 x cubed plus 5 x squared minus 12 x minus 6 end cell row cell p left parenthesis 1 right parenthesis end cell equals cell 2 open parentheses 1 close parentheses cubed plus 5 open parentheses 1 close parentheses squared minus 12 open parentheses 1 close parentheses minus 6 end cell row blank equals cell 2 plus 5 minus 12 minus 6 end cell row blank equals cell negative 11 end cell end table end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mtable columnspacing=¨0px¨ columnalign=¨right center left¨»«mtr»«mtd»«mrow»«mi»p«/mi»«mo»(«/mo»«mi»x«/mi»«mo»)«/mo»«/mrow»«/mtd»«mtd»«mo»=«/mo»«/mtd»«mtd»«mn»2«/mn»«msup»«mi»x«/mi»«mn»3«/mn»«/msup»«mo»+«/mo»«mn»5«/mn»«msup»«mi»x«/mi»«mn»2«/mn»«/msup»«mo»-«/mo»«mn»12«/mn»«mi»x«/mi»«mo»-«/mo»«mn»6«/mn»«/mtd»«/mtr»«mtr»«mtd»«mrow»«mi»p«/mi»«mo»(«/mo»«mn»1«/mn»«mo»)«/mo»«/mrow»«/mtd»«mtd»«mo»=«/mo»«/mtd»«mtd»«mn»2«/mn»«msup»«mfenced»«mn»1«/mn»«/mfenced»«mn»3«/mn»«/msup»«mo»+«/mo»«mn»5«/mn»«msup»«mfenced»«mn»1«/mn»«/mfenced»«mn»2«/mn»«/msup»«mo»-«/mo»«mn»12«/mn»«mfenced»«mn»1«/mn»«/mfenced»«mo»-«/mo»«mn»6«/mn»«/mtd»«/mtr»«mtr»«mtd/»«mtd»«mo»=«/mo»«/mtd»«mtd»«mn»2«/mn»«mo»+«/mo»«mn»5«/mn»«mo»-«/mo»«mn»12«/mn»«mo»-«/mo»«mn»6«/mn»«/mtd»«/mtr»«mtr»«mtd/»«mtd»«mo»=«/mo»«/mtd»«mtd»«mo»-«/mo»«mn»11«/mn»«/mtd»«/mtr»«/mtable»«/mstyle»«/math»" height="78" role="math" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAMsAAABOCAYAAACOhuJYAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAABGJhU0UAAAAnZS4n9QAABdNJREFUeNrtnFGEHlcUx0dUVaywIipWlYg+xKq+VEVUlKiKVStE5CkiL1XV14iKyFvkISqqL1URFaUiqvJQIlZEVImKqopSfaiqKFF9iFrh67lyhumYmXvu3HPvPTP7/3Fkv83Mt+fcuWfuOfeb719VoGZB9pTsLtlBg/69T/YP2e9ka7hcwAKvkP1t0K+LZM+TvUn2By7TdDhD9lHg8WcmEtvbZNcN+/cc2b+YgtPgXbIvR5x3jc+1Xoo9INtl2McPyC5hGtrH3dV+Jds54lx3zi9cSmixxj3GJv/7KdlS5HueILsjTCzJMV02lrfIvuHroFVynuUbRK7xrUbOnUtcfjpfviM7bD1ZTpFdjjj/Mr+HFje5Gd/W8E+jhNpUTBbNXuqm8s3mC7KTA36mGt8QXHJucK9WsS+HyL61nizXq7idmLXEg+0G8onCyvKjwWTZ4IRJVX7mGt9QzlXPdgJN8ZDsCNl9HpDzHcc86lmGvybb33i9THaLbHfruO1kfwWWLCGly8tcJo7xr/47P5O9njlZQvxbKCdhlWl8x/ID2YqlRHF3DPcZw+dkL/FrV5++0zruac/5K5xk27hMcKvH3ogSZyyunl+P9K8amcyLnnM2udZ2GxyvKYxfleBms8g4vqF+PuH+5AH//BXZqyWT5Q1u4Nol0yfCZHGcZrsyMClSJctS5d9tk/qnfTeuV9R1vkseyuSfZiwlxrc55240StDdvJKtl0qWY2RXW787Tnah9bs/yXb0vMceDuygZ9AfKd8ZX6yebWX77sQS/1IlS82ugZ0nbf+0Yik1vs3Sv73758q830oly8dk73U08yvCBt9NgnucdOczNvjLfNdZFkxSiX+pk2UH94Y5/NOIpeT41lzlXqm9Ut8vlSxuQG43+pUPe3YguraOl7iZW+XXnw00yK6sO6nco6wKSgipf9rJcqVxofdw+XAsk38asZQc35p93CLsa6x01wbK2eS4HaqjvLT9xD934Zo398HizsZrtxd/oHGM+7/vyV7oWM4fVrqfE/hKthD/UnCKx3aT+5XjHeNZ0j9fuWtlfF3ybXCDf6NAT/e/gB8HHD/nx10AGOQwZ2sIoQ9GnuWdEgAmzYkq7hEWAAAAAAAAAAAAAAAAAGALY10uSQIklUBWrMolSYCkUgFC5JAsSCFp+ltKLkkzBquSSlObV17GPB9W8tkwTX9LySVpj7lFSaWpzSsvfXJIPlmdUlJIKfzNLZekHYNFSSUr80pVdqlPDsknq1NVZaSQUvmbUy5JMwarkkoW5pW67JJPDmnhWQlySyGl8De3XJJmDFYllSzMqyDZpRg5JElQJaSQNP0tJZeUIgZrkkqp5lUIYtmlWDkk6YDllkLK6W8quSRLMWgkS67rlEx2SUMOqVSyDEn1lPRXSy7J8g0qxA+r16npg0h2SUMOyRdUCSmkVP5qJ0tNl1xSyRi04rV8nZqloEh2KVYOqUSDL5HqKemvllyS5U0ViR/Wr1ONWHYpRg5JGlQJKaSS/mrJJVka8zHxWr9ONWLZpbFySENlVHsZzi2FZM3fvkkyJJc0hRhiJZUsxeiVXcohhzSXx10qxLC1Y0wth2RBCmlq/s41hsnHCDkkAAAAAAAAAAAAAAAAAAAAAADoQCKE0IeWmEQMGkIPMaiKMwDbSIQQYpMlJRpCD2NRF2cA06JLCMFysoT+nZD4fASJMwBbpBKsmFOyhMTnQyzOAOZJlxCCNBnHikloJPsiQ3xtxOIMYF4MCSForBpDYhI5VpYx8fkQizOA+ZRhPiEEzRKrS0widbKMjc+HWJwBzAOJEIJmsnSJSaRMlpj4fIjFGcB8epRV5QnaRCImkTJZYuLzIRZnAPMu3bSQiElo+58zPq84AwAAAAAAAAAAAAAAAAAAAAAAAAAAsILv++/SYwCYPb7vv0uPAWDLYOnrxQCIJ23sd/CRLAAkTDQkCwBYWQBWByQLAFhZAECyADCzsm/MMWCL8B/l+jaJRCUs6gAAA3d0RVh0TWF0aE1MADxtYXRoIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8xOTk4L01hdGgvTWF0aE1MIj48bXRhYmxlIGNvbHVtbmFsaWduPSJyaWdodCBjZW50ZXIgbGVmdCIgY29sdW1uc3BhY2luZz0iMHB4Ij48bXRyPjxtdGQ+PG1yb3c+PG1pPnA8L21pPjxtbz4oPC9tbz48bWk+eDwvbWk+PG1vPik8L21vPjwvbXJvdz48L210ZD48bXRkPjxtbz49PC9tbz48L210ZD48bXRkPjxtbj4yPC9tbj48bXN1cD48bWk+eDwvbWk+PG1uPjM8L21uPjwvbXN1cD48bW8+KzwvbW8+PG1uPjU8L21uPjxtc3VwPjxtaT54PC9taT48bW4+MjwvbW4+PC9tc3VwPjxtbz4tPC9tbz48bW4+MTI8L21uPjxtaT54PC9taT48bW8+LTwvbW8+PG1uPjY8L21uPjwvbXRkPjwvbXRyPjxtdHI+PG10ZD48bXJvdz48bWk+cDwvbWk+PG1vPig8L21vPjxtbj4xPC9tbj48bW8+KTwvbW8+PC9tcm93PjwvbXRkPjxtdGQ+PG1vPj08L21vPjwvbXRkPjxtdGQ+PG1uPjI8L21uPjxtc3VwPjxtZmVuY2VkPjxtbj4xPC9tbj48L21mZW5jZWQ+PG1uPjM8L21uPjwvbXN1cD48bW8+KzwvbW8+PG1uPjU8L21uPjxtc3VwPjxtZmVuY2VkPjxtbj4xPC9tbj48L21mZW5jZWQ+PG1uPjI8L21uPjwvbXN1cD48bW8+LTwvbW8+PG1uPjEyPC9tbj48bWZlbmNlZD48bW4+MTwvbW4+PC9tZmVuY2VkPjxtbz4tPC9tbz48bW4+NjwvbW4+PC9tdGQ+PC9tdHI+PG10cj48bXRkLz48bXRkPjxtbz49PC9tbz48L210ZD48bXRkPjxtbj4yPC9tbj48bW8+KzwvbW8+PG1uPjU8L21uPjxtbz4tPC9tbz48bW4+MTI8L21uPjxtbz4tPC9tbz48bW4+NjwvbW4+PC9tdGQ+PC9tdHI+PG10cj48bXRkLz48bXRkPjxtbz49PC9tbz48L210ZD48bXRkPjxtbz4tPC9tbz48bW4+MTE8L21uPjwvbXRkPjwvbXRyPjwvbXRhYmxlPjwvbWF0aD6yigBaAAAAAElFTkSuQmCC" style="max-width: none; vertical-align: -39px;" width="203" />

&nbsp;

Diketahui <img align="middle" alt="begin mathsize 14px style p left parenthesis x right parenthesis equals 2 x cubed plus 5 x squared minus 12 x minus 6 end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mi»p«/mi»«mo»(«/mo»«mi»x«/mi»«mo»)«/mo»«mo»=«/mo»«mn»2«/mn»«msup»«mi»x«/mi»«mn»3«/mn»«/msup»«mo»+«/mo»«mn»5«/mn»«msup»«mi»x«/mi»«mn»2«/mn»«/msup»«mo»-«/mo»«mn»12«/mn»«mi»x«/mi»«mo»-«/mo»«mn»6«/mn»«/mrow»«/mstyle»«/math»" height="17" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -3px;" width="176" />, Tentukan&nbsp;<img align="middle" alt="begin mathsize 14px style p left parenthesis 2 right parenthesis end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mi»p«/mi»«mo»(«/mo»«mn»2«/mn»«mo»)«/mo»«/mrow»«/mstyle»«/math»" height="15" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -3px;" width="29" />,&nbsp;<img align="middle" alt="begin mathsize 14px style p left parenthesis negative 3 right parenthesis end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mi»p«/mi»«mo»(«/mo»«mo»-«/mo»«mn»3«/mn»«mo»)«/mo»«/mrow»«/mstyle»«/math»" height="15" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -3px;" width="43" />, dan&nbsp;<img align="middle" alt="begin mathsize 14px style p left parenthesis 1 right parenthesis end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mi»p«/mi»«mo»(«/mo»«mn»1«/mn»«mo»)«/mo»«/mrow»«/mstyle»«/math»" height="15" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -3px;" width="29" /> dengan menggunakan metode subtitusi dan skema

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