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Which expression is equivalent to x^4-y^4?
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Which expression is equivalent to x^4-y^4?

User Steve Claridge
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2 Answers

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x^4-y^4=(x^2)^2-(y^2)^2=(x^2-y^2)(x^2+y^2)=(x-y)(x+y)(x^2+y^2)
User Nick Babcock
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6 votes

x^4-y^4=(x^2)^2-(y^2)^2=(x^2-y^2)(x^2+y^2)\\\\=(x-y)(x+y)(x^2+y^2)\\\\\\\\a^2-b^2=(a-b)(a+b)
User Sounak
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