2 (A & # 178; - AB) - 3 (2a & # 178; - AB) where a = - 2, B = 3, the evaluation is urgent! | Math enthusiast | Mathematical art

2 (A & # 178; - AB) - 3 (2a & # 178; - AB) where a = - 2, B = 3, the evaluation is urgent!

Original formula = 2A ^ 2-2ab-6a ^ 2 + 3AB
=-4a^2+ab
The original formula = - 16-6 = - 22 can be obtained by introducing a = - 2 and B = 3

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