Solve 2-2x^2 - ScanMath

Evaluate

2 - 2 x^{2}

To find the roots of the expression,set the expression equal to 0

2 - 2 x^{2} = 0

Move the constant to the right-hand side and change its sign

- 2 x^{2} = 0 - 2

Removing 0 doesn't change the value,so remove it from the expression

- 2 x^{2} = - 2

Change the signs on both sides of the equation

2 x^{2} = 2

Divide both sides

\frac{2 x ^{2}}{2} = \frac{2}{2}

Divide the numbers

x^{2} = \frac{2}{2}

Divide the numbers

More Steps

x^{2} = 1

Take the root of both sides of the equation and remember to use both positive and negative roots

x = \pm 1

Simplify the expression

x = \pm 1

Separate the equation into 2 possible cases

x = 1 x = - 1

Solution

x_{1} = - 1, x_{2} = 1

2 2x^2