Identify coefficients: Identify the coefficients a, b, and c in the quadratic expression 2w2+11w+9 by comparing it to the standard form ax2+bx+c. a=2, b=11, c=9
Find suitable numbers: Find two numbers that multiply to a∗c (2∗9=18) and add up to b (11).The numbers 2 and 9 satisfy these conditions because 2∗9=18 and 2+9=11.
Rewrite middle term: Rewrite the middle term 11w using the two numbers found in the previous step.2w2+11w+9 can be rewritten as 2w2+2w+9w+9.
Factor by grouping: Factor by grouping. Group the first two terms together and the last two terms together.(2w2+2w)+(9w+9)
Factor out common factor: Factor out the greatest common factor from each group. 2w(w+1)+9(w+1)
Final factorization: Since both groups contain the common factor (w+1), factor this out.(2w+9)(w+1)
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