Finding the GCF
21x-15y
3(7x-5y)
a2-64
(a+8)(a-8)
x2+7x+6
(x+6)(x+1)
2m2-4m+2
2(m-1)2
14c2+2c
2c(7c+1)
y2-289
(y+17)(y-17)
m2-17m-38
(m-19) (m+2)
3x2+15x-72
3(x+8)(x-3)
8x3y4-22x5y6
2x3y4(4-11x2y2)
25x2-1
(5x+1)(5x-1)
x2+9x-36
(x+12)(x-3)
x3+9x2-52x
x(x+13)(x-4)
y2-10y+16
(y-8)(y-2)