Question

Solve for x: under root 6x+7 - (2x-7) =0

Answer 1

Root(6x+7)-(2x-7)=0
Root(6x+7)=2x-7
Root(6x+7)=2x-7

Squaring on both the sides
6x+7=(2x-7)^2
6x+7=4x^2 +49-28x
0=4x^2 +42-34x
0=(X-7)(2x-3)
X=7

Answer 2

 √(6x+7)-(2x-7)=0
 √6x+7)=2x-7
 √(6x+7)=2x-7

Lets square on both side-
6x+7=(2x-7)2
6x+7=4x2+49-28x
0=4x2+42-34x

0=(X-7)(2x-3)
X=7