<img align="middle" alt="begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell left parenthesis g ring operator f right parenthesis left parenthesis x right parenthesis end cell equals cell 4 x squared minus 4 x plus 2 end cell row cell g left parenthesis 2 x minus 1 right parenthesis end cell equals cell 4 x squared minus 4 x plus 2 end cell row blank blank blank row cell 2 x minus 1 end cell equals a row cell 2 x end cell equals cell a plus 1 end cell row x equals cell fraction numerator a plus 1 over denominator 2 end fraction end cell row blank blank blank row cell g left parenthesis a right parenthesis end cell equals cell 4 open parentheses fraction numerator a plus 1 over denominator 2 end fraction close parentheses squared minus 4 open parentheses fraction numerator a plus 1 over denominator 2 end fraction close parentheses plus 2 end cell row blank equals cell a squared plus 2 a plus 1 minus 2 a minus 2 plus 2 end cell row blank equals cell a squared plus 1 end cell row blank blank blank row cell g left parenthesis x right parenthesis end cell equals cell x squared plus 1 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 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style="max-width: none; vertical-align: -142px;" width="242" />

Jadi, jawaban yang tepat adalah C.

Diketahui&nbsp;<img align="middle" alt="begin mathsize 14px style open parentheses g ring operator f close parentheses left parenthesis x right parenthesis equals 4 x squared minus 4 x plus 2 end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mfenced»«mrow»«mi»g«/mi»«mo»§#8728;«/mo»«mi»f«/mi»«/mrow»«/mfenced»«mo»(«/mo»«mi»x«/mi»«mo»)«/mo»«mo»=«/mo»«mn»4«/mn»«msup»«mi»x«/mi»«mn»2«/mn»«/msup»«mo»-«/mo»«mn»4«/mn»«mi»x«/mi»«mo»+«/mo»«mn»2«/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="156" />&nbsp;dan&nbsp;<img align="middle" alt="size 14px f size 14px left parenthesis size 14px x size 14px right parenthesis size 14px equals size 14px 2 size 14px x size 14px minus size 14px 1" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi mathsize=¨14px¨»f«/mi»«mo mathsize=¨14px¨»(«/mo»«mi mathsize=¨14px¨»x«/mi»«mo mathsize=¨14px¨»)«/mo»«mo mathsize=¨14px¨»=«/mo»«mn mathsize=¨14px¨»2«/mn»«mi mathsize=¨14px¨»x«/mi»«mo mathsize=¨14px¨»-«/mo»«mn mathsize=¨14px¨»1«/mn»«/math»" height="15" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -3px;" width="85" />&nbsp;maka&nbsp;<img align="middle" alt="begin mathsize 14px style g left parenthesis x right parenthesis equals.... end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mi»g«/mi»«mo»(«/mo»«mi»x«/mi»«mo»)«/mo»«/mrow»«mo»=«/mo»«mo».«/mo»«mo».«/mo»«mo».«/mo»«mo».«/mo»«/mstyle»«/math»" height="15" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -3px;" width="66" />&nbsp;

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