Express the following in the form a + bi, where a and b are real numbers:

Question

√15+8i
√3-4i
√2i
√-48+14i

Answer 1

The first 3 are already expressed in the form a + bi

for the last one:
√-48 + 14i
= 4√3 i + 14i
= 0 + (4√3+14) i

Answer 2

For the last one square root of -48+14i is
1,2
Bc it says I got it right