Question

Simplify using i
root -15 root -4

Answer 1

5

Explanation:

Answer 2

-2 sqrt(15)

Explanation:

sqrt(-15) sqrt(-4)

We can use sqrt(ab) = sqrt(a) sqrt(b)

sqrt(-1) sqrt(15) * sqrt(-1) * sqrt(4)

We know the sqrt(-1) = i

i * sqrt(15) * i * 2

2i^2 sqrt(15)

i^2 = -1

-2 sqrt(15)