what is the question. this is not a question it is a statement
(c + di)^2 = c^2 + 2cdi + (di)^2
= c^2 + 2cdi - d^2
= c^2 - d^2 + 2cdi
The real part is c^2 - d^2. The imaginary part is cdi.
Since c and d are nonzero real numbers, the product cd is also nonzero and real. Even if c and d are equal, and the real part c^2 - d^2 becomes zero, the imaginary part, cdi will always have a nonzero coefficient (cd). Therefore, the imaginary part is always there.
Im pretty sure you just multiply 12 by 108, in that case there would be 2160 rows
The logarithmic form of the equation y=loga x is equivalent to the exponential form x=ay. To rewrite one form in the other, keep the base the same, and switch sides with the other two values.