SOLUTION: Does 2i times the square root of -4 equal -4? I think 2i times the square root of -4 does equal -4, because the square root of -4 equals 2i and (2i)(2i) equals 4i^2. i^2 = -1

Question 188636: Does 2i times the square root of -4 equal -4?

I think 2i times the square root of -4 does equal -4, because the square root of -4 equals 2i and (2i)(2i) equals 4i^2. i^2 = -1 so (-1)(4)= -4.

So I am wondering if my solution of -4 correct?
Answer by ptaylor(2198) (Show Source): You can put this solution on YOUR website!
YOU ARE RIGHT ON!!!!
GOOD WORK---LOOKS LIKE YOU ARE ON TOP OF THE COMPLEX NUMBERS!!!
Hope this helps---ptaylor
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