x²×(x/y-y/x)×(y/x+x/y)×y²
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Answer:
x⁴-y⁴
Step-by-step explanation:
x²×(x/y-y/x)×(y/x+x/y)×y²=
x²×((x²-y²)/yx)×((x²+y²)/xy)×y²=
x²y²×(x²-y²)×(x²+y²)/x²y²=
(x²-y²)×(x²+y²)= x⁴-y⁴
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