2006-10-20 02:42:46 · 12 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
it is 2i.
This is because sqrt(-4) = sqrt(4) * sqrt (-1) = 2 * i
dont forget i is the sqrt of -1.
2006-10-20 02:45:33 · answer #1 · answered by Stuart T 3 · 1⤊ 0⤋
The answer to this would be a complex number since root(-1) = i
so root(-4) = root(-1*4) = root(-1)*root(4) = i*2 = 2i
2006-10-20 10:05:01 · answer #2 · answered by Leah H 2 · 0⤊ 0⤋
sq root of 4 is 2 and sq root of -1 is i
so the answer is 2i
2006-10-21 02:05:30 · answer #3 · answered by grandpa 4 · 0⤊ 0⤋
The square root of (- 4)
â-4=
2i
- - - - - - - s
2006-10-20 10:19:13 · answer #4 · answered by SAMUEL D 7 · 0⤊ 0⤋
square root(-4) = 2*squareroot(-1)=2i
since i=square root(-1)
2006-10-20 09:47:08 · answer #5 · answered by Isidro 2 · 0⤊ 1⤋
You cannot have a sqrt of a negative number but it can be useful to pretend you can for the sake of complex arithmetic.
2006-10-20 09:55:48 · answer #6 · answered by sydney m 2 · 0⤊ 0⤋
-(2 to the second power)
2006-10-20 09:48:18 · answer #7 · answered by dark_mirrors 2 · 0⤊ 0⤋
2i where i is srqt of -1
2006-10-20 11:08:33 · answer #8 · answered by nayanmange 4 · 0⤊ 0⤋
invalid cannot have a sqrt of a negative integer
2006-10-20 09:51:38 · answer #9 · answered by Anonymous · 0⤊ 0⤋
yup 2i
2006-10-20 09:51:12 · answer #10 · answered by Tiger 5 · 0⤊ 0⤋