factor: 5x(a+b) +3(a+b) I know the answer is (a-b) (5x+3) But how would you get that answer?
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Originally Posted by mathhelp23 factor: 5x(a+b) +3(a+b) I know the answer is (a-b) (5x+3) But how would you get that answer? If you are really clueless multiply everything out 5x(a+b) +3(a+b) 5xa + 5xb + 3a + 3b Collect like terms 5xa + 3a + 5ax +3b a(5x+3) + b( 5x +3) Let say w = ( 5x +3) So this becomes aw + bw collect like terms again w( a+b) ( 5x +3)(a+b) Saladus
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