1) two numbers that multiple to make ac and add to make b:
2(18)=36 (6x6)
12 (6+6)
2) rewrite equation with numbers in b spot
2x^2+6x+6x+18
3)Factor first two and last two terms separately so that ( ) has common factor
2x^2+6x 6x+18
2x(x+3) + 6(x+3)
4)take first terms of each and put in parentheses and second stay
(2x+6) (x+3)
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