a) (3a+2s)^2=
b)(6t-3 radical 3)^2=
c) (5m-4n) (5m+4n)=
____________________
a) (9+5u)^2=
b) (3 radical 2 - 2c)^2=
c) (7k+4f) (7k-4f)=
_____________________
a) (8a-5)^2=
b) (3radical 3+4c)^2
c) (6z-5) (6z+5)
______________________
______URGENT!!_______