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Solve Quadratic Equations by the Quadratic Formula

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More Lessons for Grade 9 Math
Math Worksheets

Examples, videos, worksheets, solutions and activities to help Algebra students learn about solving quadratic equations by the quadratic formula.

Quadratic Equations - solving using the formula
Some quadratic equations cannot be solved by factorising and so an alternative method is the quadratic formula. This tutorial shows you when to use it, clues given in a question and common mistakes that are made
Solving Quadratic Equations
The quadratic formula is x equals the opposite of b, plus or minus the square root of b squared, minus 4ac all over 2a

Advanced Quadratic Formula
Students learn to solve advanced quadratic equations using the quadratic formula, such as equations with fractions and rational equations.
Quadratic Equation Errors
Typical errors made when solving quadratic equations.

Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

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