Solve 7x^2 - 252 - ScanMath

Evaluate

7 x^{2} - 252

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

7 x^{2} - 252 = 0

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

7 x^{2} = 0 + 252

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

7 x^{2} = 252

Divide both sides

\frac{7 x ^{2}}{7} = \frac{252}{7}

Divide the numbers

x^{2} = \frac{252}{7}

Divide the numbers

More Steps

x^{2} = 36

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

x = \pm 36

Simplify the expression

More Steps

x = \pm 6

Separate the equation into 2 possible cases

x = 6 x = - 6

Solution

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

Factor the expression