You can put this solution on YOUR website! Use the ac test to determine if the trinomial can be factored.
x^2+2y-15
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Find two integers whose product is AC= -15
and whose sum is B=2
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The numbers are 5 and -3
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So the trinomial can be factored using the AC Method.
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(x+5)(x-3)
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Cheers,
Stan H.