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\sqrt{4x}+2-2=8-2
Subtract 2 from both sides of the equation.
\sqrt{4x}=8-2
Subtracting 2 from itself leaves 0.
\sqrt{4x}=6
Subtract 2 from 8.
4x=36
Square both sides of the equation.
\frac{4x}{4}=\frac{36}{4}
Divide both sides by 4.
x=\frac{36}{4}
Dividing by 4 undoes the multiplication by 4.
x=9
Divide 36 by 4.