Question

Teresa is factoring this polynomial by grouping. Which common factors should be used in the next step of factoring?

10x3+3x2−20x−6

(10x3+3x2)+(−20x−6)

x2 and −2x
2x2 and −2x
x2 and −2
2x2 and −2

Answer 1

Answer:
`x^2` and
`-2`

Explanation:

original :

`(10x^3+3x^2)+(-20x-6)`

factored :

`x^2(10x+3)+-2(10x+3)`

Answer :

`x^2` and
`-2`