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  2. Fifth power (algebra) - Wikipedia

    en.wikipedia.org/wiki/Fifth_power_(algebra)

    For any integer n, the last decimal digit of n 5 is the same as the last (decimal) digit of n, i.e. ()By the Abel–Ruffini theorem, there is no general algebraic formula (formula expressed in terms of radical expressions) for the solution of polynomial equations containing a fifth power of the unknown as their highest power.

  3. Quintic function - Wikipedia

    en.wikipedia.org/wiki/Quintic_function

    If the quintic is solvable, one of the solutions may be represented by an algebraic expression involving a fifth root and at most two square roots, generally nested. The other solutions may then be obtained either by changing the fifth root or by multiplying all the occurrences of the fifth root by the same power of a primitive 5th root of ...

  4. Exponentiation - Wikipedia

    en.wikipedia.org/wiki/Exponentiation

    Here, 243 is the 5th power of 3, or 3 raised to the 5th power. ... However, this formula is true only if the summands commute (i.e. that ab = ba), ...

  5. Euler's sum of powers conjecture - Wikipedia

    en.wikipedia.org/wiki/Euler's_sum_of_powers...

    Ed Pegg Jr., Math Games, Power Sums; James Waldby, A Table of Fifth Powers equal to a Fifth Power (2009) R. Gerbicz, J.-C. Meyrignac, U. Beckert, All solutions of the Diophantine equation a 6 + b 6 = c 6 + d 6 + e 6 + f 6 + g 6 for a,b,c,d,e,f,g < 250000 found with a distributed Boinc project; EulerNet: Computing Minimal Equal Sums Of Like Powers

  6. Sums of powers - Wikipedia

    en.wikipedia.org/wiki/Sums_of_powers

    In mathematics and statistics, sums of powers occur in a number of contexts: . Sums of squares arise in many contexts. For example, in geometry, the Pythagorean theorem involves the sum of two squares; in number theory, there are Legendre's three-square theorem and Jacobi's four-square theorem; and in statistics, the analysis of variance involves summing the squares of quantities.

  7. Fifth power - Wikipedia

    en.wikipedia.org/wiki/Fifth_power

    Fifth power may refer to: Fifth power (algebra), the result of multiplying five instances of a number together; Fifth power (politics), a political term;

  8. Cuba restores power to one-fifth of population after ... - AOL

    www.aol.com/news/cuba-electrical-grid-collapses...

    HAVANA (Reuters) -Cuba's government said late on Saturday it had restored power to nearly one-fifth of the island's people after the national grid collapsed twice in 24 hours, plunging millions of ...

  9. Vieta's formulas - Wikipedia

    en.wikipedia.org/wiki/Vieta's_formulas

    Vieta's formulas can equivalently be written as < < < (=) = for k = 1, 2, ..., n (the indices i k are sorted in increasing order to ensure each product of k roots is used exactly once). The left-hand sides of Vieta's formulas are the elementary symmetric polynomials of the roots.