Question

(ii) 2x2 + y2 + 8z2 - 272 xy + 412
Write the following cubes in expan
(i) (2x + 1)3
(ii) (2a-3
Evaluate the following using suita
(i) (99)3​

Answer 1

Answer:

using the formulas

(a+b) to the whole cube=a cube+b cube + 3ab(a+b)

(a-b) the whole cube=a cube +b cube -3ab(a-b)