simplify this math

Question

3i^2+4i-2i-√-7 √-7 + √-3√-3

Answer 1

3i² + 4i - 2i - √(-7)·√(-7) + √(-3)·√(-3)

Now:

1. 3i² = 3·(-1) = -3
2. 4i - 2i = 2i
3. √(-7)·√(-7) = (√(-7))² = -7
4. √(-3)·√(-3) = (√(-3) )² = -3

3i² + 4i - 2i - √(-7)·√(-7) + √(-3)·√(-3)

= -3 + 2i - (-7) + (-3)

= -3 + 2i + 7 - 3

= 1 + 2i