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Factor by grouping.
9x3 – 39x2 – 30x

1 Answer

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Given:

The expression is


9x^3-39x^2-30x

To find:

The factors by grouping method.

Solution:

We have,


9x^3-39x^2-30x

Taking out common factors, we get


=x(9x^2-39x-30)

Splitting the middle term, we get


=x(9x^2-45x+6x-30)

By grouping method, we get


=x(9x(x-5)+6(x-5))


=x(x-5)(9x+6)

Therefore, the factor form of given expression is x(x-5)(9x+6).

User Simon Ji
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