Question

simplify (x^2-y^2)^2+4x^2 y^2

Answer 1

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(x²-y²)²+4x²y²
= (x²)²-2x²y²+(y²)²+4x²y²
= (x²)²+(y²)²+2x²y²
= (x²+y²) ²-2x²y²+2x²y²
= (x²+y²) ²
= x⁴+2x²y²+y⁴ [Answer]

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