Question

Which is the completely factored form of 12x3 – 60x2 + 4x – 20? 4(3x2 – 1)(x – 5) 4x(3x2 + 1)(x – 5) 4x(3x2 – 1)(x + 5) 4(3x2 + 1)(x – 5)

Answer 1

Answer:

4(3x^2+1)(x-5)

Step-by-step explanation:

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

Taking 4 common from the expression,

4(3x^3-15x^2+x-5)

Taking 3x^2 common from 3x^3-15x^2,

4 ( 3x^2 (x-5) + 1 (x-5))

4 (3x^2+1) (x-5)