Question

factorize
1) a^4-625
2)1-3x-3y-4(x+y)^2
3)12(a+b)^2-(a+b)-35
4)7a^2-567a
5)15(2x-y)^2-16(2x-y)-25

plz answer if u know and don't give stupid sentences like f**k etc plz

Answer 1

1) (a^2 + 25)(a + 5)(a - 5)
2) (1 - 4x - 4y)(1 + x + y)
3) (4a + 4b - 7)(3a + 3b + 5)
4) 7a (a - 81)
5) (30x - 15y - 25)(2x - y + 1)