Let's say that the variable 'x' is definitely some negative number.(adsbygoogle = window.adsbygoogle || []).push({});

So if I wanted to solve:

[tex]x^2 = 4[/tex]

I get:

[tex]\pm \sqrt{x^2} = \pm \sqrt{4}[/tex]

[tex]\pm x = \pm 2[/tex]

I would have to take the positive value of 'x' and the negative value of '2' to make this true...is it okay to only take a positive square root of one side of the equation and the negative square root of the other?

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# Homework Help: Taking negative/positive square roots

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