Solve and identify any extraneous solutions?

Question

Solve and identify any extraneous solutions x=√x+7+5

Answer 1

Hello Charles B.,

I will assume the x + 7 is under the square root.

I will get you started. Then see if you can solve it.

First subtract 5 from both sides. Then square both sides. Then get all the nonzero terms on the same side. Multiply out the part that is squared. Then see if you can factor it and solve for x.

You can send in your work to be checked by an expert after you have tried it.