Question

Which is the completely factored form of 12x3-60x2+4x-20?

Answer 1

`4\left(x-5\right)\left(3x^2+1\right)`

Explanation:

`12x^3-60x^2+4x-20`

`4* \:3x^3-4* \:15x^2+4x-4* \:5`

`4\left(3x^3-15x^2+x-5\right)`

`4\left(3x^3-15x^2\right)+\left(x-5\right)`

`4\left(x-5\right)\left(3x^2+1\right)`

Answer 2

`(12 {x}^(2) + 4)(x - 5) \\`

Explanation:

`12 {x}^(3) - 60 {x}^(2) + 4x - 20 \\ 12 {x}^(2) (x - 5) + 4(x - 5) \\ (12 {x}^(2) + 4)(x - 5)`