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April 18, 2014

April 18, 2014

Posted by **Melissa** on Friday, July 24, 2009 at 1:45pm.

= 9¡î-3

is this correct

- algebra -
**Melissa**, Friday, July 24, 2009 at 1:58pmsorry I did not realize sqrt could not be read

It should read

sqrt-27 with a little three on the outside.

and my answer is

9sqrt-3

- algebra -
**Marth**, Friday, July 24, 2009 at 7:47pmsqrt(-27)

First, you have the square root of a negative. Use i to express the sqrt(-1):

i*sqrt(27)

Consider that 27 = 3^3, or 9*3.

= i*sqrt(9*3)

The sqrt(9) is 3, so you have 3i*sqrt(3)

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