Solve 18x^2-18 - ScanMath

Evaluate

18 x^{2} - 18

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

18 x^{2} - 18 = 0

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

18 x^{2} = 0 + 18

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

18 x^{2} = 18

Divide both sides

\frac{18 x ^{2}}{18} = \frac{18}{18}

Divide the numbers

x^{2} = \frac{18}{18}

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

Factor the expression