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  2. National Curriculum and Textbook Board - Wikipedia

    en.wikipedia.org/wiki/National_Curriculum_and...

    National Curriculum and Textbook Board traces its origins to the East Pakistan School Textbook Board which was established in 1954. In 1971, the Bangladesh School Textbook Board was established. In 1976 it was constituted as the National Curriculum and Syllabus Committee and the National Curriculum Development Centre was established in 1981.

  3. Clearing denominators - Wikipedia

    en.wikipedia.org/wiki/Clearing_denominators

    Simplifying this further gives us the solution x = −3. It is easily checked that none of the zeros of x ( x + 1)( x + 2) – namely x = 0 , x = −1 , and x = −2 – is a solution of the final equation, so no spurious solutions were introduced.

  4. Irreducible fraction - Wikipedia

    en.wikipedia.org/wiki/Irreducible_fraction

    The notion of irreducible fraction generalizes to the field of fractions of any unique factorization domain: any element of such a field can be written as a fraction in which denominator and numerator are coprime, by dividing both by their greatest common divisor. [7] This applies notably to rational expressions over a field. The irreducible ...

  5. Education in Bangladesh - Wikipedia

    en.wikipedia.org/wiki/Education_in_Bangladesh

    The National Curriculum and Textbook Board (NCTB) is responsible for the development of curriculum and production of textbooks. According to the National Curriculum and Textbook Board, this year (2022), 34,70,16,277 textbooks have been distributed among 4,17,26,856 pre-primary, primary, secondary, Ebtedayee , Dakhil , vocational, SSC vocational ...

  6. Fraction - Wikipedia

    en.wikipedia.org/wiki/Fraction

    When the numerator and the denominator are both positive, the fraction is called proper if the numerator is less than the denominator, and improper otherwise. [11] The concept of an improper fraction is a late development, with the terminology deriving from the fact that fraction means piece, so a proper fraction must be less than 1. [10]

  7. Unit fraction - Wikipedia

    en.wikipedia.org/wiki/Unit_fraction

    Slices of approximately 1/8 of a pizza. A unit fraction is a positive fraction with one as its numerator, 1/ n.It is the multiplicative inverse (reciprocal) of the denominator of the fraction, which must be a positive natural number.

  8. Partial fraction decomposition - Wikipedia

    en.wikipedia.org/wiki/Partial_fraction_decomposition

    In algebra, the partial fraction decomposition or partial fraction expansion of a rational fraction (that is, a fraction such that the numerator and the denominator are both polynomials) is an operation that consists of expressing the fraction as a sum of a polynomial (possibly zero) and one or several fractions with a simpler denominator. [1]

  9. Solving quadratic equations with continued fractions - Wikipedia

    en.wikipedia.org/wiki/Solving_quadratic...

    In case 2, the rate of convergence depends on the absolute value of the ratio between the two roots: the farther that ratio is from unity, the more quickly the continued fraction converges. This general solution of monic quadratic equations with complex coefficients is usually not very useful for obtaining rational approximations to the roots ...