Question

Which of the following is the correct notation for √-75+63
A. 63+5√3i
B. 63+5i√3
C. 5√3+63i
D. 5i√3+63

Answer 1

√-75 can be expressed as √(-1*75) = √-1 * √75 = 5i√3
complex numbers are always expressed as a+bi, where a is the real part.
so the correct answer is B. 63+5i√3