SOLUTION: If {{{sqrt(2x)}}} -5=1, then x=? A. -8 B. 8 C. 9 D. 12 e. 18

Algebra ->  Square-cubic-other-roots -> SOLUTION: If {{{sqrt(2x)}}} -5=1, then x=? A. -8 B. 8 C. 9 D. 12 e. 18      Log On


   

Question 430011: If sqrt%282x%29 -5=1, then x=?
A. -8
B. 8
C. 9
D. 12
e. 18
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+sqrt%282x%29+-+5+=+1+
Add 5 to both sides
+sqrt%282x%29+=+6+
Square both sides
+2x+=+36+
+x+=+18+
e. is the answer