Practice Quadratic Formula in Math
Use these practice problems to test your method after reviewing the concept explanation and worked examples.
Quick Recap
A formula giving the exact solutions to any quadratic equation ax^2 + bx + c = 0 directly from its three coefficients.
When factoring fails, this formula always finds the x-intercepts.
Example 1
easySolve x^2 - 5x + 6 = 0 by factoring.
Example 2
mediumSolve 2x^2 + 3x - 2 = 0 using the quadratic formula.
Example 3
hardSolve 2x^2 - 5x - 3 = 0 using the quadratic formula.
Example 4
easySolve x^2 - 9 = 0.
Example 5
hardSolve x^2 + 4x + 5 = 0 and describe the solutions.