117
No.
No.
The GCF is 7mn.
The GCF is 4.
9xy(3xy - 4)
(5x - 2y)(5x + 2y)
52 is not a factor of 325. 5 squared is a factor of 325.
(x)(x)
(a + x^2)(b + y^2)
6xyz(3x + 2y + z)
9x^(2) - 6xy + y^(2) - 81 9x^(2) - 81 + y^(2) - 6xy 9(x^(2) - 9)+ y(y - 6x) 9(x-3)(x + 3) + y(y - 6x) 9x^(2)
35