Solving Quadratic Equations by Quadratic Formula

Math - Grade 9 / Patterns and Algebra

Sample Question

Which of the following is the quadratic formula?

  • [% x=\frac{-b\text{±}\sqrt{b^2-4ac}}{2a} %]
  • [% x=\frac{b\text{±}\sqrt{b^2-4ac}}{2a} %]
  • [% x=\frac{-b\text{±}\sqrt{b^2-4ac}}{2c} %]
  • [% x=\frac{-b\text{±}\sqrt{b^2+4ac}}{2a} %]

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Math - Grade 9

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