How to solve a quadratic equation?

To solve a quadratic equation, you need to use the general formula of the quadratic equation:

ax2 + bx + c = 0

Where a, b, c are the coefficients of the equation and x is the root to find.

To find the roots of the equation, you need to calculate Δ of the equation:

Δ = b2 - 4ac

If Δ > 0, the equation has 2 distinct roots:

If Δ = 0, the equation has 1 double root:

x1 = x2 = -b / 2a

If Δ < 0, the equation has no solution.

How to use an online quadratic equation solver?

To use the online quadratic equation solver, you can access the quadratic equation tool of Technhanh and follow these steps:

  1. Enter the coefficients of the equation into the blank fields. The quadratic equation is in the form ax2 + bx + c = 0, where a, b, c are the coefficients of the equation. Please enter the coefficients into the corresponding blank fields on the website.
  2. Click the "Confirm" button to see the results. Technhanh will calculate and display the roots of the quadratic equation for you.