You can put this solution on YOUR website! factor this equation: 2a^2+7a^1-4
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Use the AC Method.
a = 2 ; b = 7 ; c = -4
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Think of two numbers whose product is AC = 2*-4 = -8
and whose sum or difference is b = 7
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The numbers are +8 and -1:
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Replace the "b" term by 8a - a.
2a^2 +8a - a - 4
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Factor the 1st two and the last two terms separately:
2a(a+4)-(a+4)
Factor again to get the final answer:
(a+4)(2a-1)
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Cheers,
Stan H.
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