Question

Factor -7x3 + 21x2 + 3x - 9 by grouping. What is the resulting expression?

Answer 1

`(x-3)(-7x^2+3)` is the resulting expression after grouping

Explanation:

Given:

`-7x^3+21x^2+3x-9`

Now taking common
`-7x^2` from 1st 2 numbers and and 3 common from last we get

`-7x^2(x-3)+3(x-3)`

Now taking x-3 common from both numbers we get

`(x-3)(-7x^2+3)` which is the final equation after grouping