(x - y) (x + y) (x^2 + y^2) is equal to
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Answer:
x^4 + 2x^2y^2 + y^4
Step-by-step explanation:
= x^2 + xy - yx - y^2 (x^2+y^2)
= x^4 + x^2y^2 + x^2y^2 + y^4
= x^4 + 2x^2y^2 + y^4
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