Identify Coefficients: Identify the coefficients of the quadratic expression.The quadratic expression is 2x2+x−3.Here, a=2, b=1, and c=−3.
Find Multiplying Numbers: Find two numbers that multiply to a∗c (which is 2∗(−3)=−6) and add up to b (which is 1).We need to find two numbers that multiply to −6 and add up to 1.The numbers −2 and 3 satisfy these conditions because −2∗3=−6 and −2+3=1.
Rewrite Middle Term: Rewrite the middle term using the two numbers found.The expression 2x2+x−3 can be rewritten as 2x2−2x+3x−3 by splitting the middle term.
Factor by Grouping: Factor by grouping.Group the terms as follows: 2x2−2x + 3x−3.Factor out the common factors from each group.From the first group, factor out 2x: 2x(x−1).From the second group, factor out 3: 3(x−1).
Factor Common Binomial: Factor out the common binomial factor.The expression now looks like 2x(x−1)+3(x−1).The common binomial factor is (x−1).Factor this out to get (x−1)(2x+3).