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  2. Algebraic expression - Wikipedia

    en.wikipedia.org/wiki/Algebraic_expression

    A rational algebraic expression (or rational expression) is an algebraic expression that can be written as a quotient of polynomials, such as x 2 + 4x + 4. An irrational algebraic expression is one that is not rational, such as √ x + 4.

  3. Rational expression - Wikipedia

    en.wikipedia.org/wiki/Rational_expression

    Rational expression may refer to: A mathematical expression that may be rewritten to a rational fraction , an algebraic fraction such that both the numerator and the denominator are polynomials. A regular expression , also known as rational expression, used in formal language theory (computer science)

  4. Clearing denominators - Wikipedia

    en.wikipedia.org/wiki/Clearing_denominators

    In mathematics, the method of clearing denominators, also called clearing fractions, is a technique for simplifying an equation equating two expressions that each are a sum of rational expressions – which includes simple fractions.

  5. Complex number - Wikipedia

    en.wikipedia.org/wiki/Complex_number

    Adding a fixed complex number to all complex ... A complex number is an expression of the ... familiar rules for the arithmetic of rational or real numbers continue ...

  6. Rational function - Wikipedia

    en.wikipedia.org/wiki/Rational_function

    In mathematics, a rational function is any function that can be defined by a rational fraction, which is an algebraic fraction such that both the numerator and the denominator are polynomials. The coefficients of the polynomials need not be rational numbers ; they may be taken in any field K .

  7. Addition - Wikipedia

    en.wikipedia.org/wiki/Addition

    In primary education, students are taught to add numbers in the decimal system, starting with single digits and progressively tackling more difficult problems. Mechanical aids range from the ancient abacus to the modern computer , where research on the most efficient implementations of addition continues to this day.

  8. 21 Winter Casserole Recipes You Can Make in an Hour or Less

    www.aol.com/21-winter-casserole-recipes-hour...

    The corn tortillas crisp up under the broiler, adding crunch to go with the creamy filling. If you enjoy a bit of spiciness, opt for hot salsa or chipotle salsa for some smoky undertones ...

  9. Fraction - Wikipedia

    en.wikipedia.org/wiki/Fraction

    If the numerator and the denominator are polynomials, as in ⁠ + ⁠, the algebraic fraction is called a rational fraction (or rational expression). An irrational fraction is one that is not rational, as, for example, one that contains the variable under a fractional exponent or root, as in ⁠ x + 2 x 2 − 3 {\displaystyle {\frac {\sqrt {x+2 ...

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