Solve x2-2x-2=0

$$x2-2x-2=0$$

Solve for x

$$x=\frac{x_{2}-2}{2}$$

Steps for Solving Linear Equation

Subtract x_{2} from both sides. Anything subtracted from zero gives its negation.

$$-2x-2=-x_{2}$$

Add 2 to both sides.

$$-2x=-x_{2}+2$$

The equation is in standard form.

$$-2x=2-x_{2}$$

Divide both sides by -2.

$$\frac{-2x}{-2}=\frac{2-x_{2}}{-2}$$

Dividing by -2 undoes the multiplication by -2.

$$x=\frac{2-x_{2}}{-2}$$

Divide -x_{2}+2 by -2.

$$x=\frac{x_{2}}{2}-1$$

Solve for x_2

$$x_{2}=2\left(x+1\right)$$

Solution Steps

Add 2x to both sides. Anything plus zero gives itself.

$$x_{2}-2=2x$$

Add 2 to both sides.

$$x_{2}=2x+2$$