Identify Factors: Identify common factors in pairs of terms.Calculation: Group terms as 3a2x−12x and −5a2y+20y.Common factors are 3x for the first group and −5y for the second group.
Factor Common Factors: Factor out the common factors from each group.Calculation: 3x(a2−4)−5y(a2−4).
Recognize Common Factor: Recognize the common binomial factor.Calculation: Both groups have a common factor of (a2−4).
Factor Binomial Factor: Factor out the common binomial factor.Calculation: (a2−4)(3x−5y).