Solve Quadratic Equation Calculator

Table of contents

What is a Quadratic Equation?

A quadratic equation is a second-degree polynomial equation in a single variable, typically written in the form:

ax² + bx + c = 0

Where:

• a ≠ 0
• x is the variable
• a, b, and c are constants

How to Use the Quadratic Equation Calculator

1. Enter the values of a, b, and c from your equation into the respective fields.
2. Click the “Solve” button.
3. The calculator will instantly display the solutions (roots) of the equation.

Understanding the Results

The calculator provides:

• The two roots (x₁ and x₂) of the equation
• The nature of the roots (real, imaginary, or equal)
• The steps used to solve the equation

The Quadratic Formula

The calculator uses the quadratic formula to solve equations:

x = [-b ± √(b² - 4ac)] / (2a)

This formula is derived from completing the square and is the most reliable method for solving quadratic equations.

Real-World Applications

Quadratic equations are used in various fields:

1. Physics: Calculating projectile motion
2. Economics: Modeling supply and demand
3. Engineering: Designing parabolic structures
4. Finance: Predicting profit and loss

Tips for Solving Quadratic Equations

1. Always check if the equation can be factored first
2. Remember that a, b, and c must be real numbers and a ≠ 0
3. Practice identifying the coefficients in different equation formats

Common Mistakes to Avoid

• Forgetting to include the ± sign in the formula

• Miscalculating the discriminant (b² - 4ac)

• Not simplifying the final answer when possible

• If discriminant > 0: Two distinct real roots

• If discriminant = 0: One real root (repeated)

• If discriminant < 0: Two complex conjugate roots

Can all quadratic equations be solved using this calculator?

Yes, our calculator can solve any quadratic equation with real coefficients, providing both real and complex solutions.

How accurate is the calculator?

The calculator provides highly accurate results, typically to several decimal places. For most practical applications, this level of precision is more than sufficient.

What if I get complex roots?

Complex roots occur when the discriminant is negative. They are expressed in the form a + bi, where i is the imaginary unit (√-1).

Can this calculator solve higher-degree polynomials?

No, this specific calculator is designed for quadratic equations only. Higher-degree polynomials require different solving methods.

Ready to solve your quadratic equation? Try our calculator now and get instant, accurate results with step-by-step explanations!

Frequently Asked Questions

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