
Andrew M. answered 10/08/17
Tutor
New to Wyzant
Mathematics - Algebra a Specialty / F.I.T. Grad - B.S. w/Honors
First look at the numbers:
8, 28, 4
4(2) = 8
4(7) = 28
The GCF of 4, 8, 28 is 4
Look at the variables:
x5, x4, x3
x3(x2) = x5
x3(x) = x4
The GCF is x3
So the GCF of 8x5 + 28x4 + 4x3 is 4x3
8x5 + 28x4 + 4x3 = 4x3(2x2 + 7x + 1)