Question

factorise x^4-(y+z)^4 {plz don't post irrelevant contents}
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Answer 1

Answer:

x^4 - (y+z)^4 = (x^2)^2 - {(y+z)^2}^2

= {(x^2 + (y+z)^2}{x^2 - (y+z)^2}

={x^2 + (y+z)^2}{x + (y +z}{x - (y+z)}

= {x^2 + (y+z)^2}(x+y +z)(x -y -z)