a) (4+n)^2= 16 + 24n + n^2 = 16 + 8n + n^2
b) (6x-3)^2= 36x^2 - 263*x + 3^2 = 36x^2 - 36x + 9
c) (-3a+5x)^2= 9a^2 - 2(-3)5ax + 25x^2 = 9a^2 + 30ax + 25x^2
d) (4x^2+3c)^2= 16x^4 + 243cx^2 + 9c^2 = 16x^4 + 24cx^2 + 9c^2
a) (4+n)^2= 16 + 24n + n^2 = 16 + 8n + n^2
b) (6x-3)^2= 36x^2 - 263*x + 3^2 = 36x^2 - 36x + 9
c) (-3a+5x)^2= 9a^2 - 2(-3)5ax + 25x^2 = 9a^2 + 30ax + 25x^2
d) (4x^2+3c)^2= 16x^4 + 243cx^2 + 9c^2 = 16x^4 + 24cx^2 + 9c^2