Question

Factorise:
(i) 9x2 + 4y2 + 16z2 – 12xy – 16yz + 24xz
(ii) x2 + 2y2 + 8z2 + 2√2 xy – 8yz – 4√2xz​

Answer 1

Answer:

1. (3x)2 + ( -2y)2 + (8z)2 + 2×3x×( -2y) + 2×(-2y) ×8z + 2×8z × 3x

• (3x-2y+8z) ( 3x-2y+8z)