Solve x^2 - x - 20 = 0

Evaluate

x^{2} - x - 20 = 0

Factor the expression

More Steps

(x - 5) (x + 4) = 0

When the product of factors equals 0,at least one factor is 0

x - 5 = 0 x + 4 = 0

Solve the equation for x

More Steps

x = 5 x + 4 = 0

Solve the equation for x

More Steps

x = 5 x = - 4

Solution

x_{1} = - 4, x_{2} = 5

Solve the quadratic equation