Question

x⁴-(x-z)⁴ how to factorise
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Answer 1

Step-by-step explanation:

x⁴-(x-z)⁴

=(x²)²-{(x-z)²}²

={x²+(x-z)²}.{x²-(x-z)²}

=(2x²-2xz+z²)(x+x-z)(x-x+z)

=(2x²-2xz+z²)(2x-z).z