Factorise :
25x3 - x
5 Likes
= x (25x2 - 1)
= x ((5x)2 - (1)2)
Using the formula
[∵ (x2 - y2) = (x + y)(x - y)]
= x (5x + 1)(5x - 1)
Hence,25x3 - x = x (5x + 1)(5x - 1)
Answered By
3 Likes
x2 - (a - b) x - ab is equal to:
(x - a) (x - b)
(x + a) (x - b)
(x - a) (x + b)
(x + a) (x + b)
8x2y - 18y3
16x4 - 81y4
x2 - y2 - 3x - 3y