Factorise: 4x^2 + 9y^2 + 16z^2 + 12xy - 24 yz - 16xz

Question

Factorise:

(i)4x2 + 9y2 + 16z2 + 12xy - 24 yz - 16xz

(ii) 2x2 + y2 + 8z2 - 2√2xy + 4√2yz - 8xz

Answer 1

It is known that,

(x + y + z)2 = x2+ y2+ z2+ 2xy + 2yz +2zx