February 22, 2017

Homework Help: algebra : square root

Posted by Amy on Tuesday, November 2, 2010 at 7:08pm.

I remember my teacher saying something about you square root an answer like 121 the answer is -11 and +11

But, this also is not true for all the answers

Could someone tell me when I square root a number, when it is both a + and -, and when it is just a + .

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