Since x3 is a factor of x5, it is automatically the GCF.
This factors as (x5 - 4) (x5 + 4).
x2(x3 + 1) is the best you can do there.
x times x times x times x times x
The GCF is x5
14 ( x13, x5, x7)
Choose the lowest of the exponents. The GCF of x3 and x5 is x3
The GCF is x5
75 = 3 x 5 x 5
x5-1 = (x - 1)(x4 + x3 + x2 + 1)
(x^5 - y)(x^5 + y)
x10 =========================== Another contributor says: If the question means [ x5 + x5 ] then the sum is [ 2 x5 ].