SOLUTION: I am frustrted with my homework assignment, Can someone please help me with this, I need to solve and check the sq rt of x+4=3

Algebra ->  Radicals -> SOLUTION: I am frustrted with my homework assignment, Can someone please help me with this, I need to solve and check the sq rt of x+4=3      Log On


   

Question 87137: I am frustrted with my homework assignment, Can someone please help me with this, I need to solve and check the sq rt of x+4=3
Answer by tutorcecilia(2152) About Me  (Show Source):
You can put this solution on YOUR website!
%28sqrt%28x%2B4%29%29=3
%28%28sqrt%28x%2B4%29%29%5E2%29= %28%283%29%5E2%29 [get rid of the radical by squaring both sides]
.
x+4=9 [solve for the x-term]
x=9-4
x=5
.
Check by plugging (x=5) back into the original equation and solve:
%28sqrt%28x%2B4%29%29=3
%28sqrt%285%2B4%29%29=3
%28sqrt%289%29%29=3
3=3[checks out]