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(x^2 - y^2) × (x^2 + y^2) = ____
i need answer fastly
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(x²-y²)×(x²+y²)=______.
It is in the form of (a-b)×(a+b)=a²-b².
a=x². b=y².
(x²-y²)×(x²+y²)=(x²)²-(y²)².
=x⁴-y⁴.
I think this is your answer.
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