SOLUTION: I have been trying to help my son with his Alg. homework, but its been a long time since I took it. Would you help me solve {{{sqrt(x+6)+1=3}}} please. His teacher provided the a

Algebra ->  Radicals -> SOLUTION: I have been trying to help my son with his Alg. homework, but its been a long time since I took it. Would you help me solve {{{sqrt(x+6)+1=3}}} please. His teacher provided the a      Log On


   

Question 396018: I have been trying to help my son with his Alg. homework, but its been a long time since I took it. Would you help me solve sqrt%28x%2B6%29%2B1=3 please. His teacher provided the answer of -2, but I don't get that answer. Thanks.
Found 2 solutions by richard1234, mananth:
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
Plugging x = -2 works. To solve it, isolate the radical to get

sqrt%28x%2B6%29+=+2

Square both sides:
x+%2B+6+=+4 --> x = -2

Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
I have been trying to help my son with his Alg. homework, but its been a long time since I took it. Would you help me solve sqrt%28x%2B6%29%2B1=3 please. His teacher provided the answer of -2, but I don't get that answer. Thanks.
...
sqrt%28x%2B6%29%2B1=3
...
sqrt%28x%2B6%29=3-1
..
sqrt%28x%2B6%29=2
...
take the square on both sides
(x+6)=4
..
-6 -6
x=-6+4
x=-2

m.ananth@hotmail.ca