Question

What should be taken away from 3a 2 – 4b 2 + 5ab + 20 to obtain –a 2 – b 2 +6ab + 20?

Answer 1

Answer:

4a^2 - 3b^2 - ab should be taken away from 3a^2-4b^2+5ab+20 to obtain -a^2-b^2+6ab+20

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