SOLUTION: factor by grouping, ab+10a-2b-20
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Question 270366: factor by grouping, ab+10a-2b-20
Answer by JBarnum(2146) (Show Source): You can put this solution on YOUR website!
just like any other factoring a times b= ab and they give u the 2 numbers u need to get -20, and it tells u that the -2 has to multiply with b and that the +10 has to multiply with a, so we get:
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