Quadratic equation calculator

Quadratic equation has the basic form:

a x^{2} + b x + c = 0

Enter the quadratic equation's coefficients a, b, and c of its basic standardized form. A solution of quadratic equations is usually two different real or complex roots or one double root — the calculation using the discriminant.

Calculation:

(x + 2) * (x + 1) = 90 x^{2} + 3 x - 88 = 0 a = 1; b = 3; c = - 88 D = b^{2} - 4 a c = 3^{2} - 4 \cdot 1 \cdot (- 88) = 361 D > 0 x_{1, 2} = \frac{- b \pm D}{2 a} = \frac{- 3 \pm 3 6 1}{2} x_{1, 2} = \frac{- 3 \pm 1 9}{2} x_{1, 2} = - 1.5 \pm 9.5 x_{1} = 8 x_{2} = - 11 Factored form of the equation: (x - 8) (x + 11) = 0

Solution in text:

x²+3x-88=0 ... quadratic equation

Discriminant:
D = b² - 4ac = 361
D > 0 ... The equation has two distinct real roots

x₁ = 8
x₂ = -11

P = {8; -11}