Question

(x²+y²-z²) ²-4x²y² factorise the following ​

Answer 1

Step-by-step explanation:

(x2+y2−z2)2–(2xy)2

(x2+y2−z2+2xy)(x2+y2−z2–2xy)

(x2+2xy+y2−z2)(x2–2xy+y2−z2)

((x+y)2−z2)((x−y)2−z2)

(x+y+z)(x+y−z)(x−y−z)(x−y+z)