Question

applying a suitable identity find the product of( x-y),( x+ y)and (X2+ y2)​

Answer 1

using a²-b² = (a+b)(a-b)

=(x-y)(x+y)(x²+y²)

=(x²-y²)(x²+y²)

=(x²)²-(y²)²

=x⁴-y⁴

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