Question 40751
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