Question

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

Answer 1

`12x^3 - 60x^2 + 4x - 20 \\ \\ GCF = 4 \\ \\ 4( (12x^3)/(4) + (-60x^2)/(4) + (4x)/(4) - (20)/(4)) \\ \\ 4(3x^3 - 15x^2 + x - 5) \\ \\ 4(3x^2(x - 5) + (x - 5)) \\ \\ 4(x - 5)(3x^2 + 1) \\ \\`

The final result is: 4(x - 5)(3x² + 1).