Question

Factorise
${x}^{4 } - {(y + 1)}^{4}$
pls help​

Answer 1

Answer:

x^4-(y+1)^4

=(x^2)^2-{(y+1)^2}^2

={x^2+(y+1)^2}{x^2-(y+1)^2}

=(x^2+y^2+2y+1)(x+y+1)(x-y-1)