Question

factorise the following- x⁴ - (y+z)⁴​

Answer 1

It is on the formula a (square) + b (square)

a2 + b2 = ( a + b) (a - b)

So,

a2 = x2

b2 = ( y + z ) 2

So,

( x + y + z ) ( x - y + z )