SOLUTION: What is the sqrt of (x+2)

SOLUTION: What is the sqrt of (x+2) - x = 0

Question 158211: What is the sqrt of (x+2) - x = 0

Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Start with the given equation.

Add "x" to both sides.

Square both sides.

Subtract from both sides.

Notice we have a quadratic equation in the form of where , , and

Let's use the quadratic formula to solve for x

Start with the quadratic formula

Plug in , , and

Square to get .

Multiply to get

Rewrite as

Add to to get

Multiply and to get .

Take the square root of to get .

or Break up the expression.

or Combine like terms.

or Simplify.

So the possible answers are or

However, it turns out that if you plug in , then the original equation will be false. So we must ignore

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Answer:

So the solution is
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