factorize 2(a - b)^2 - 5(a - b) - 12
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Let a-b=x
2x^2-5x-12
2x^2-8x+3x-12
2x(x-4)+3(x-4)
(X-4)(2x+3)
(a-b-4)(2a-2b+3)
2x^2-5x-12
2x^2-8x+3x-12
2x(x-4)+3(x-4)
(X-4)(2x+3)
(a-b-4)(2a-2b+3)
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