Solve x^2+4x+8 - ScanMath

Evaluate

x^{2} + 4 x + 8

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

x^{2} + 4 x + 8 = 0

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

x = \frac{- 4 \pm 4 ^{2} - 4 \times 8}{2}

Simplify the expression

More Steps

x = \frac{- 4 \pm - 16}{2}

Simplify the radical expression

More Steps

x = \frac{- 4 \pm 4 i}{2}

Separate the equation into 2 possible cases

x = \frac{- 4 + 4 i}{2} x = \frac{- 4 - 4 i}{2}

Simplify the expression

More Steps

x = - 2 + 2 i x = \frac{- 4 - 4 i}{2}

Simplify the expression

More Steps

x = - 2 + 2 i x = - 2 - 2 i

Solution

x_{1} = - 2 - 2 i, x_{2} = - 2 + 2 i

Find the roots