It is: 2a(2b+c)
2a(2b-c) :P
4ab - 6ab = ab(4 - 6). ab(4 - 6) = 2ab(2-3)
4ab
5a³ - 4ab + 2a³ = (5+2)a³ - 4ab = 7a³ - 4ab.
2a*2b = 4ab
(-a-7b+5)4ab
4ab * 3a = 12a2b -----------
a^2b^2(4ab) = 8a^3b^3.
(4ab^2 + 3cd)(4ab^2 - 3cd)
ab
The GCF is 4ab.