Question

What is the sum of the square root of -2 and the square root of -18?

Answer 1

Answer: B) 4 square root 2i

Explanation:

Just took the ed test

Answer 2

4 sqrt(2) i

Explanation:

sqrt(-2) + sqrt(-18)

We know that sqrt(ab) = sqrt(a) sqrt(b)

sqrt(-1) sqrt(2) + sqrt(-1) sqrt(9) sqrt(2)

The sqrt(-2) =i

sqrt(2) i + 3sqrt(2) i

4 sqrt(2) i