Answer:
No, 16i^2+8i+15
Step-by-step explanation:
No, she did not square it properly.
(a+b)^2=a^2+2ab+b^2
So in this case, a=3, and b=4i
(3+4i)^2
= 3^2+2(3*4i)+(4i)^2
=9+6+8i+16i^2
=15+8i+16i^2
= 16i^2+8i+15
