SOLUTION: i'm really confused on problems where you have to square-root the function for the given value; x. the problem: 1/2(the square root symbol)x+7 ;2 if you know how to do it can

Question 40751This question is from textbook Algebra 1
: i'm really confused on problems where you have to square-root the function for the given value; x.
the problem: 1/2(the square root symbol)x+7 ;2
if you know how to do it can you tell me. please
thanks This question is from textbook Algebra 1

Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
1/2SQRT(X+7)=2(?) DIVIDE BOTH SIDES BY 1/2 WE GET SQRT(X+7)=4 NOW SQARE BOTH SIDES OF THE EQUATION WE GET X+7=4*4 OR X+7=16 OR X=9
PROOF 1/2SQRT(9+7)=2 OR 1/2 SQRT16=2 OR 1/2SQRT16=2 OR 1/2*4=2 OR 2=2
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