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

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Answer 1 · 2015-05-22T07:19:02

$3x^2 - 2x - 15x + 10$

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

$3x$ is common to both the terms in the first group, and $-2$ is common to both the terms in the second group

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

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