Find the roots of the following quadratic equation using quadratic formula.
$x^{2} - 2 x - 8 = 0$

Open in App

Solution

Consider the given quadratic equation.

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

Therefore, using discriminant formula, roots of the equation are,

$x = \frac{2 \pm \sqrt{4 + 32}}{2}$

$x = \frac{2 \pm 6}{2}$

$x = - 2, x = 4$

Hence, these are the required roots of the equation.

Suggest Corrections

Similar questions

x^{2} - 16 x + 64 = 0

2 x^{2} - 2 \sqrt{2} x + 1 = 0

x^{2} + 2 \sqrt{2} x + 6 = 0

Find the roots of quadratic equation x² - 4x + 4 = 0 using the quadratic formula.

2 x^{2} - 3 x + 1 = 0

Join BYJU'S Learning Program