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  2. Quadratic equation - Wikipedia

    en.wikipedia.org/wiki/Quadratic_equation

    Quadratic equation. In mathematics, a quadratic equation (from Latin quadratus ' square ') is an equation that can be rearranged in standard form as [1] where x represents an unknown value, and a, b, and c represent known numbers, where a ≠ 0. (If a = 0 and b ≠ 0 then the equation is linear, not quadratic.)

  3. Mathematics - Wikipedia

    en.wikipedia.org/wiki/Mathematics

    Mathematics is a field of study that discovers and organizes methods, theories and theorems that are developed and proved for the needs of empirical sciences and mathematics itself. There are many areas of mathematics, which include number theory (the study of numbers), algebra (the study of formulas and related structures), geometry (the study ...

  4. Oxford Dictionary of English - Wikipedia

    en.wikipedia.org/wiki/Oxford_Dictionary_of_English

    The Oxford Dictionary of English (ODE) is a single-volume English dictionary published by Oxford University Press, first published in 1998 as The New Oxford Dictionary of English (NODE). The word "new" was dropped from the title with the Second Edition in 2003. [1] The dictionary is not based on the Oxford English Dictionary (OED) – it is a ...

  5. Ordinal numeral - Wikipedia

    en.wikipedia.org/wiki/Ordinal_numeral

    Cardinal versus ordinal numbers. In linguistics, ordinal numerals or ordinal number words are words representing position or rank in a sequential order; the order may be of size, importance, chronology, and so on (e.g., "third", "tertiary"). They differ from cardinal numerals, which represent quantity (e.g., "three") and other types of numerals.

  6. Algebra - Wikipedia

    en.wikipedia.org/wiki/Algebra

    Algebra is the branch of mathematics that studies certain abstract systems, known as algebraic structures, and the manipulation of statements within those systems. It is a generalization of arithmetic that introduces variables and algebraic operations other than the standard arithmetic operations such as addition and multiplication.

  7. List of Indian inventions and discoveries - Wikipedia

    en.wikipedia.org/wiki/List_of_Indian_inventions...

    They also found the second-order Taylor approximations for these functions, and the third-order Taylor approximation for sine. [192] [193] [194] Power series – The Kerala school of astronomy and mathematics or the Kerala school was a school of mathematics and astronomy founded by Madhava of Sangamagrama in Tirur, Malappuram, Kerala, India ...

  8. List of Italian inventions and discoveries - Wikipedia

    en.wikipedia.org/wiki/List_of_Italian_inventions...

    Bocce, a boules-type game dating back to Roman times [502] and later developed in Italy; [503] bocce volo as a variant. The game was spread across Europe by the Romans and is closely related to the later British bowls and French boules. [502] Calcio Fiorentino or historic football. The Vocabolario della Crusca (first edited in 1612) noted ...

  9. Play Hearts Online for Free - AOL.com

    www.aol.com/games/play/masque-publishing/hearts

    Enjoy a classic game of Hearts and watch out for the Queen of Spades! By Masque Publishing. Advertisement. Advertisement.