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All right, let's say that you have an equation like this:

2x=4

In order to find x, we need to get it alone. Because of this, we will divide by 2. The reason we divide by 2 is because when you're trying to get the answer of something in Algebra, you will need to do the opposite of what is being done to the original variable.

The same is true with a square root.

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Q: Why will a square and square root cancel each other out?
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