# Formula for solving quadratic equations

The quadratic formula is: x = −b ± √b2 − 4ac 2a x = - b ± b 2 - 4 a c 2 a You can use this formula to solve quadratic equations. Or, if your equation factored, then you can use the quadratic formula to test if your solutions of the quadratic

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Only if it can be put in the form ax2 + bx + c = 0, and a is not zero. The name comes from quad meaning square, as the variable is squared (in other words x2 ). These are all quadratic

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## Solving Quadratic Equations by the Quadratic Formula

a x 2 + b x + c = 0. Write the expression as a product of two or more factors. Taking the square root. x 2 = constant. Calculate the square root of both sides of the equation. Completing the

## Solve Quadratic Equations using Quadratic Formula

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