Question

Factor the polynomial completely. 12x4 – 42x3 – 90x2 What is the GCF of the polynomial?

Answer 1

Find the greatest common divisor:

gcd(-258) The largest positive divisor of a number is the absolute value of itself:

Answer:  gcd(-258) = -258

Answer 2

GCF = 6x^2

12x^4 - 42x^3 - 90x^2 =

= 6x^2(2x^2 - 7x - 15)

= 6x^2(2x + 3)(x - 5)