SOLUTION: Can yhou please walk me through this? 4 = 5 + sqrt(2 x + 59) x = ? Is this solution extraneous? Yes or No Jerry jerry@san.rr.com

Algebra ->  Square-cubic-other-roots -> SOLUTION: Can yhou please walk me through this? 4 = 5 + sqrt(2 x + 59) x = ? Is this solution extraneous? Yes or No Jerry jerry@san.rr.com      Log On


   

Question 318551: Can yhou please walk me through this?
4 = 5 + sqrt(2 x + 59)
x = ?
Is this solution extraneous? Yes or No
Jerry
jerry@san.rr.com
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
4=5%2Bsqrt%282x%2B59%29 subtract 5
-1=sqrt%282x%2B59%29 square both sides
1=2x%2B59 subtract 59
-58=2xdivide by 2
highlight%28-29=x%29


checking
4=5%2Bsqrt%282x%2B59%29
4=5%2Bsqrt%282%28-29%29%2B59%29
4=5%2Bsqrt%28%28-58%29%2B59%29
4=5%2Bsqrt%281%29
4=5%2B%28-1%29 or 4=5%2B%281%29 this one doesnt work 4=6
4=4
correct