need help on how to do this problem!

Question

Solve for :

       

The lower (or only) solution for this equation is    

The higher solution for this equation is    

The solution     is an extraneous solution (if any).

(Fill in each with an integer or a rational number or the word "none" or "n/a" with no capital letters or quotation marks.)

Answer 1

Square both sides and collect terms.

The roots of the resulting quadratic are 7 and -1.

You decide how to answer the question! Be CAREFUL!!!!!!!