Question

${x}^4 - {y}^4 \div x + y$
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Answer 1

Answer:

(x⁴ - y⁴) = (x²)² - (y²)² = (x²+y²) (x² - y²)

= (x²+y²) (x+y) (x-y)

Dividing it with x+y, we get

(x²+y²) (x-y)

Answer 2

Answer:

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