a) (11x+y^2)^2=121x^2+22xy^2+y^4
b) (3c-d)^2= 9c^2-6cd+d^2
c) (-m-2b)^2=m^2+4bm+4b^2
d) (-2a+5c)^2=25c^2-20ac+4a^2
a) (11x+y^2)^2=121x^2+22xy^2+y^4
b) (3c-d)^2= 9c^2-6cd+d^2
c) (-m-2b)^2=m^2+4bm+4b^2
d) (-2a+5c)^2=25c^2-20ac+4a^2