Identify Quadratic Expression: Identify the quadratic expression in the form of aw2+bw+c. Here, a=9, b=−24, and c=16.
Find Multiplying Numbers: Look for two numbers that multiply to ac (9×16=144) and add up to b (−24).The numbers are −12 and −12 because −12×−12=144 and −12+−12=−24.
Rewrite Middle Term: Rewrite the middle term −24w using the two numbers found: −12w and −12w. So, 9w2−24w+16 becomes 9w2−12w−12w+16.
Factor by Grouping: Factor by grouping. Group the first two terms and the last two terms.(9w2−12w)−(12w−16)
Factor out Common Factor: Factor out the common factor from each group.3w(3w−4)−4(3w−4)
Notice Common Factor: Notice that (3w−4) is a common factor.Factor out (3w−4) from both terms.(3w−4)(3w−4)
More problems from Factor quadratics: special cases