quadratic formula

noun

Definition of quadratic formula

: a formula that gives the solutions of the general quadratic equation ax2 + bx + c = 0 and that is usually written in the form x = (-b ± √(b2 − 4ac))/(2a)

Examples of quadratic formula in a Sentence

Recent Examples on the Web That’s when students turn to the quadratic formula. Jonathan Corum, New York Times, "This Professor’s ‘Amazing’ Trick Makes Quadratic Equations Easier," 5 Feb. 2020 What algebra students currently learn Before students are presented with the quadratic formula, they’re taught a simpler method to solve certain equations. Jonathan Corum, New York Times, "This Professor’s ‘Amazing’ Trick Makes Quadratic Equations Easier," 5 Feb. 2020 The upshot is that the quadratic formula ensures that, in our town, the collective well-being of the public is maximized through the voting system. Eric Posner And Glen Weyl, Vox, "The Supreme Court is an anti-democratic nightmare. Here’s how to fix it.," 29 June 2018 When a referendum is held, people exchange their voice credits for votes, according to a quadratic formula: one vote costs one credit; two votes cost four credits; three votes cost nine credits; and so on. Eric Posner And Glen Weyl, Vox, "The Supreme Court is an anti-democratic nightmare. Here’s how to fix it.," 29 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'quadratic formula.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of quadratic formula

1804, in the meaning defined above

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Time Traveler for quadratic formula

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The first known use of quadratic formula was in 1804

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Cite this Entry

“Quadratic formula.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quadratic%20formula. Accessed 3 Jul. 2020.

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