Solve a^2-a-20=0 - ScanMath

Evaluate

a^{2} - a - 20 = 0

Factor the expression

More Steps

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

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

a - 5 = 0 a + 4 = 0

Solve the equation for a

More Steps

a = 5 a + 4 = 0

Solve the equation for a

More Steps

a = 5 a = - 4

Solution

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

Solve the quadratic equation