Identify coefficients: Identify the coefficients a, b, and c in the quadratic expression 2w2+9w+7 by comparing it to the standard form ax2+bx+c.a=2, b=9, c=7
Find suitable numbers: Find two numbers that multiply to a∗c (2∗7=14) and add up to b (9).The numbers that satisfy these conditions are 2 and 7 because 2∗7=14 and 2+7=9.
Rewrite middle term: Rewrite the middle term 9w using the two numbers found in the previous step.2w2+9w+7 can be rewritten as 2w2+2w+7w+7.
Factor by grouping: Factor by grouping. Group the first two terms and the last two terms.(2w2+2w)+(7w+7)
Factor out common factor: Factor out the greatest common factor from each group. 2w(w+1)+7(w+1)
Final factorization: Since both groups contain the common factor (w+1), factor this out.(2w+7)(w+1)
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