Question 108829
6x^2 - xy - 5y^2
Using the AC Method:
You need to think of two numbers whose product is AC = 6*-5=-30
and whose sum is B=-1
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The numbers are -6 and 5
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Rewrite the problem substituting -6+5 for -1
6x^2 -6xy+5xy -5y^2
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Factor and 1st two terms and the last two terms separately:
6x(x-y) + 5y(x-y)
Factor again:
(x-y)(6x+5y)
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Cheers,
Stan H.