SOLUTION: 2 square root of 2x+4 end of square root then minus 5=11 I dont know what to do with the 2 in the front and where to start. thank you!

Algebra ->  Radicals -> SOLUTION: 2 square root of 2x+4 end of square root then minus 5=11 I dont know what to do with the 2 in the front and where to start. thank you!      Log On


   

Question 731318: 2 square root of 2x+4 end of square root then minus 5=11
I dont know what to do with the 2 in the front and where to start. thank you!
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
2 square root of 2x+4 end of square root then minus 5=11
2%2Asqrt%282x%2B4%29+-+5 = 11
Add 5 to both sides
2%2Asqrt%282x%2B4%29 = 16
Divide both sides by 2
sqrt%282x%2B4%29+ = 8
square both sides
2x + 4 = 64
subtract 4 from both sides
2x = 60
divide both sides by 2
x = 30
;
:
Check this on a calc: enter 2%2Asqrt%282%2830%29%2B4%29 - 5, results is 11