quadratic formula

American  

[kwo-drat-ik fawr-myuh-luh] / kwɒˈdræt ɪk ˈfɔr myə lə /

noun

Mathematics.

1. the formula for determining the roots of a quadratic equation from its coefficients: .

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Example Sentences

These days most students take the math course when they are high school freshmen — remember the quadratic formula? — but top-achieving students are sometimes offered the chance to take algebra a year earlier, in eighth grade.

From New York Times

The quadratic formula has been known for centuries; the ninth-century mathematician al-Khowarizmi knew how to solve almost every quadratic equation, though he didn’t seem to consider negative numbers as roots.

From Literature

It’s the famous quadratic formula, which is the crowning achievement of high-school algebra class.

From Literature

For Matt Baker, a high school math teacher in Brooklyn, that moment came a few weeks ago, when his students started singing along to a tune intended to help them memorize the quadratic formula.

From New York Times

“A lot of us just teach the way we learned: ‘Here’s a quadratic formula, so use it to solve these equations.’

From Los Angeles Times