1.6667
25x'2
5x5=25 5x times 5x=25x
5
The GCF is 5x.
(5x - 2y)(5x + 2y)
5x
I assume you mean 10x - 25x^2 (i.e. to the power of 2, or x squared) If so 10x - 25x^2 = 5x (2 - 5x)
15
The GCF is 5x
5x^2(x^2 + 5)
There is a formula for the "difference of squares." In this case, the answer is (5x + 3)(5x - 3)