# SOLUTION: Factor trinomials. 2x^2+7x-15 (2x )(7x ) How?

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 Click here to see ALL problems on Miscellaneous Word Problems Question 139261: Factor trinomials. 2x^2+7x-15 (2x )(7x ) How?Answer by stanbon(57328)   (Show Source): You can put this solution on YOUR website!2x^2+7x-15 ---------------- Using the AC Method to factor: Think of two numbers whose product is ac = 2*-15 = -30 and whose sum is b = 7 ----------------------------------------- The numbers are 10 and -3 ---------------------------- Replace 7x by 10x-3x to get: 2x^2 + 10x - 3x - 15 ------------------------- Factor the 1st two and the last two terms separately: 2x(x+5)-3(x+5) Factor again to get the final answer: (x+5)(2x-3) =================== cheers, Stan H.