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September 17, 2014

September 17, 2014

Posted by **Linda** on Thursday, November 10, 2011 at 1:23am.

4(x+8)^2=144

I'm not sure if I'm suppose to divide or multiply the 4 to both sides..

- Math -
**Steve**, Thursday, November 10, 2011 at 5:29amyou can go about it in two ways:

divide by 4 first. You want to divide by 4, because that removes it from the left side of the equation:

(x+8)^2 = 36

(x+8) = ±6

x = -8 ± 6

Or, you can think make the left side a perfect square:

[2(x+8)]^2 = 144

2(x+8) = ±12

x+8 = ±6

x = -8 ± 6

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