Question

is x+y a factor of x⁴-y⁴
plz answer me​

Answer 1

Answer:

yes

Step-by-step explanation:

Answer 2

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Option 1

Since (x-a) is a factor of a polynomial f(x) if f(a) = 0, then (x+y) is factor if f(-y)=0.

For f(x) = x⁴-y⁴, this is f(-y) = (-y)⁴ - y⁴ = y⁴-y⁴ = 0.

So yes, (x+y) is a factor.

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Option 2

Factorizing by difference of squares (twice!):

x⁴-y⁴ = (x²)² - (y²)²

= ( x² - y² ) ( x² + y² )

= ( x - y ) ( x + y ) ( x² + y² )

So yes, (x+y) is a factor.