Solve x^2 - 11x -18

Evaluate

x^{2} - 11 x - 18

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

x^{2} - 11 x - 18 = 0

Substitute a= 1,b= - 11 and c= - 18 into the quadratic formula x = \frac{- b \pm b ^{2} - 4 a c}{2 a}

x = \frac{11 \pm ( - 11 ) ^{2} - 4 ( - 18 )}{2}

Simplify the expression

More Steps

x = \frac{11 \pm 193}{2}

Separate the equation into 2 possible cases

x = \frac{11 + 193}{2} x = \frac{11 - 193}{2}

Solution

x_{1} = \frac{11 - 193}{2}, x_{2} = \frac{11 + 193}{2}

Alternative Form

x_{1} \approx - 1.446222, x_{2} \approx 12.446222

Find the roots