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posted by Cassie on Sunday, February 24, 2013 at 10:47pm.

What is the side length of a square with an area of 144x²? A.12 B.12x C.±12x D.no solution I think it is C...? If I am right can you show your work please...I am just starting to understand these..thank you

Correct!

To answer this, we need to know the expression for the area of a square which is the square of its side length or: Area = a² Solving for the side length, a = √area a = √144x² a = 12x Therefore, the side length is 12x.

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