How do you factor by grouping 3x^2 - 2x - 15x + 103x2−2x−15x+10?

1 Answer
Don't Memorise
May 22, 2015

3x^2 - 2x - 15x + 103x2−2x−15x+10

We can make groups of two to factorise this expression:
(3x^2- 15x) + (-2x +10)(3x2−15x)+(−2x+10)

3x3x is common to both the terms in the first group, and -2−2 is common to both the terms in the second group

We can write the expression as :
3x(x - 5) - 2(x - 5)3x(x−5)−2(x−5)
=color(green)((3x - 2)(x - 5)=(3x−2)(x−5) , is the factorised form.

Related questions
See all questions in Factoring by Grouping
Impact of this question
2633 views around the world
You can reuse this answer
Creative Commons License