x^4 - y^4 + x² - y²
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7
x⁴-y⁴+x²-y²
=> (x²+y²)(x²-y²)+(x²-y²)
=> (x²-y²)[(x²+y²)+1]
=> (x+y)(x-y)(x²+y²+1) should be the fully factorized form.
=> (x²+y²)(x²-y²)+(x²-y²)
=> (x²-y²)[(x²+y²)+1]
=> (x+y)(x-y)(x²+y²+1) should be the fully factorized form.
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Answered by
2
= (x² + y²)(x²-y²)+(x²-y²)
= (x²-y²)[(x²+ y²) +1 ]
= (x+y)(x-y)(x²+y²+1)
= (x²-y²)[(x²+ y²) +1 ]
= (x+y)(x-y)(x²+y²+1)
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