Solve 12-2x^2 - ScanMath

Evaluate

12 - 2 x^{2}

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

12 - 2 x^{2} = 0

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

- 2 x^{2} = 0 - 12

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

- 2 x^{2} = - 12

Change the signs on both sides of the equation

2 x^{2} = 12

Divide both sides

\frac{2 x ^{2}}{2} = \frac{12}{2}

Divide the numbers

x^{2} = \frac{12}{2}

Divide the numbers

More Steps

x^{2} = 6

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

x = \pm 6

Separate the equation into 2 possible cases

x = 6 x = - 6

Solution

x_{1} = - 6, x_{2} = 6

Alternative Form

x_{1} \approx - 2.44949, x_{2} \approx 2.44949

12 2x^2