SOLUTION: What is the square root of 18x + the square root of 8x equal? Please! I used my best guess and guessed 5 times the square root of 2x but I know that it is wrong. Thanks

Algebra ->  Radicals -> SOLUTION: What is the square root of 18x + the square root of 8x equal? Please! I used my best guess and guessed 5 times the square root of 2x but I know that it is wrong. Thanks      Log On


   

Question 133670: What is the square root of 18x + the square root of 8x equal? Please!
I used my best guess and guessed 5 times the square root of 2x but I know that it is wrong.
Thanks
Found 2 solutions by scott8148, edjones:
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
no, that is correct

Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
Don't guess. Work it out.
.
sqrt(18x)+sqrt(8x)
=sqrt(9*2x)+sqrt(4*2x)
=3sqrt(2x)+2sqrt(2x)
=5sqrt(2x)
.
Ed