Identify a, b, c: Identify a, b, and c in the quadratic expression 2m2−13m+11. Compare 2m2−13m+11 with ax2+bx+c. a=2b0b1
Find two numbers: Find two numbers whose product is a∗c (2∗11=22) and whose sum is b (−13).We need to find two numbers that multiply to 22 and add up to −13.After checking possible factors of 22, we find that −11 and −2 satisfy the conditions.−11∗−2=222∗11=220
Rewrite middle term: Rewrite the middle term −13m using the two numbers found in Step 2.2m2−13m+11 can be rewritten as 2m2−11m−2m+11.
Factor by grouping: Factor by grouping.Group the terms: 2m2−11m + −2m+11.Factor out the common factors from each group.From the first group, we can factor out m: m(2m−11).From the second group, we can factor out −1: −1(2m−11).
Factor out common binomial: Factor out the common binomial.We now have m(2m−11)−1(2m−11).The common binomial is (2m−11).Factor this out to get (2m−11)(m−1).