factorise: x⁴- y⁴ . what is the answers
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Answer:
x⁴-y⁴
(x²)²- (y²)²
(x²+y²)(x²-y²)
(x²+y²)[(x)²-(y)²]
(x²+y²)(x+y)(x-y)
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this is perfect answer...
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