Question

(a-b)²x²+4abxy-(a+b)²y²
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Answer 1

Answer:

(a-b)^2=a^2+b^2-2ab

(a+b)^2=a^2+b^2+2ab

Now,

(a^2+b^2-2ab)x^2+4abxy-(a^2+b^2+2ab)y^2

a^2x^2+b^2x^2-2abx^2+4abxy-a^2y^2-b^2y^2-2aby^2

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Step-by-step explanation: