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25 January, 17:59

Simplify using i

root - 15 root - 4

+2
Answers (1)
  1. 25 January, 21:55
    0
    -2 sqrt (15)

    Step-by-step 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)
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