<p style="text-align: justify;">Tentukan suku pertama beda rumus <img align="middle" alt="begin mathsize 14px style ke minus n end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mi»ke«/mi»«mo»-«/mo»«mi»n«/mi»«/mrow»«/mstyle»«/math»" height="11" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -1px;" width="40" />&nbsp;dan suku ke 8 dari barisan <img align="middle" alt="begin mathsize 14px style 2 comma space minus 1 comma space minus 4 comma space minus 7 comma space... end style" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨14px¨»«mrow»«mn»2«/mn»«mo»,«/mo»«mo»§#160;«/mo»«mo»-«/mo»«mn»1«/mn»«mo»,«/mo»«mo»§#160;«/mo»«mo»-«/mo»«mn»4«/mn»«mo»,«/mo»«mo»§#160;«/mo»«mo»-«/mo»«mn»7«/mn»«mo»,«/mo»«mo»§#160;«/mo»«mo».«/mo»«mo».«/mo»«mo».«/mo»«/mrow»«/mstyle»«/math»" height="12" role="math" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAH0AAAAMCAYAAABP/rJBAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAABGJhU0UAAAAKIPF7gAAAASpJREFUeNpjYIAAHyA+DMS/oPQ0IOZhoB9QA+JaIL7AMHDAD4j/09G+/zgw3cAWILYHYiYoPxmI19DR/sVAnEhvTyMBQSC+NoD2gwAbEHcMoP3gyP82APYOVKCDEl3kAEc6qKSTH8hIB1l+d4REOqhqWzXAiU4DiBsZBhhsAuIAKtdVxNRZ/6mQaEixG1SsXwJiYSrYT4m/twEx30BFNqjxthTaqGEYATl9IRAHDXBJkziQuVwciJcDscoAljD/B8C+gWxBM0GrUdGBar2ug9IMIyjSB9r+UGhGG7A6XIeIFu6aAQp0etiNy35a2r2KQNuJkN1boJgcMaKKuadA/ImOxSy97CYU6bS0+zWBBhwhu7GFFbFiRINLA1j0jto9AKAEiONH7R76dgMA0WJ3+bFSmNgAAAEodEVYdE1hdGhNTAA8bWF0aCB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMTk5OC9NYXRoL01hdGhNTCI+PG1zdHlsZSBtYXRoc2l6ZT0iMTRweCI+PG1uPjI8L21uPjxtbz4sPC9tbz48bW8+JiN4QTA7PC9tbz48bW8+LTwvbW8+PG1uPjE8L21uPjxtbz4sPC9tbz48bW8+JiN4QTA7PC9tbz48bW8+LTwvbW8+PG1uPjQ8L21uPjxtbz4sPC9tbz48bW8+JiN4QTA7PC9tbz48bW8+LTwvbW8+PG1uPjc8L21uPjxtbz4sPC9tbz48bW8+JiN4QTA7PC9tbz48bW8+LjwvbW8+PG1vPi48L21vPjxtbz4uPC9tbz48L21zdHlsZT48L21hdGg+/5Pb8AAAAABJRU5ErkJggg==" style="max-width: none; vertical-align: -2px;" width="125" />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<img align="middle" alt="space" class="Wirisformula" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mo»§#160;«/mo»«/math»" height="5" role="math" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAQAAAAFCAYAAABirU3bAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAABGJhU0UAAAAEx0lWhwAAAAxJREFUeNpjYKABAAAAVQAB8vOvGAAAAE50RVh0TWF0aE1MADxtYXRoIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8xOTk4L01hdGgvTWF0aE1MIj48bW8+JiN4QTA7PC9tbz48L21hdGg+SHplFQAAAABJRU5ErkJggg==" style="max-width: none; vertical-align: -1px;" width="4" />&nbsp;</p>


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Tentukan suku pertama beda rumus dan suku ke 8 da...

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