Question

Factor 77x3 + 22x2 – 44x + 11. ???

Answer 1

Factor out 11:

11(7x^3 + 2x^2 - 4x + 1)

Now, you determine if the second factor can be factored again.

Answer 2

I don't understand

Answer 3

11 is called the greatest common factor (GCF) between all the numbers 77,22,44, and 11.

11 goes into all these numbers without a remainder. So 11 is called the GCF and we factor that out.