Solve x^2-5x-8 - ScanMath

Evaluate

x^{2} - 5 x - 8

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

x^{2} - 5 x - 8 = 0

Substitute a= 1,b= - 5 and c= - 8 into the quadratic formula x = \frac{- b \pm b ^{2} - 4 a c}{2 a}

x = \frac{5 \pm ( - 5 ) ^{2} - 4 ( - 8 )}{2}

Simplify the expression

More Steps

x = \frac{5 \pm 57}{2}

Separate the equation into 2 possible cases

x = \frac{5 + 57}{2} x = \frac{5 - 57}{2}

Solution

x_{1} = \frac{5 - 57}{2}, x_{2} = \frac{5 + 57}{2}

Alternative Form

x_{1} \approx - 1.274917, x_{2} \approx 6.274917

Find the roots