Question

Factorise x^2 - y^2 +z^2 -a^2 +2(xz+ay)

Answer 1

Answer:

Factorise (i) a3 – b3 – c3 – 3abc Solution: = a3 + (– b3)+(– c3) – 3a(–b) ( –c) Using x3 + y3 + z3 – 3xyz = (x + y +z) (x2 + y2 + z2 – xy – yz – xz) we get x = a y = –b c ...