Factor
\left(3a-2b\right)\left(3a+2b-4\right)
Evaluate
\left(3a-2b\right)\left(3a+2b-4\right)
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9a^{2}-12a-4b^{2}+8b
Consider 9a^{2}-4b^{2}-12a+8b as a polynomial over variable a.
\left(3a-2b\right)\left(3a+2b-4\right)
Find one factor of the form ka^{m}+n, where ka^{m} divides the monomial with the highest power 9a^{2} and n divides the constant factor -4b^{2}+8b. One such factor is 3a-2b. Factor the polynomial by dividing it by this factor.
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