How do you factor by grouping 15x^3- 6x^2- 25x +10?

1 Answer
May 7, 2015

We can make groups of 2 to factorise this expression:

(15x^3- 6x^2)- (25x -10)

3x^2 is common to both the terms in the first group, and 5 is common to both the terms in the second group

We can write the expression as :

3x^2(5x - 2) - 5(5x - 2)

The term (5x-2) is common to both the terms

=color(green)((5x - 2)(3x^2 - 5)