Algebraic Formulas

Arithmetic mean, Geometric mean, Powers and Exponents, The Equation I and II degree

Arithmetic mean (average):

Geometric mean (proportional):

Weighted arithmetic mean:


where a1, a2, ..., an represent numbers with weights p1, p2, ..., pn.



Power, natural powers and exponents               

Formulas for calculating short

First degree equations:

    A first degree equation has the form: ax+b=0.


   The solution for this equation is x = -b/a, with a different  0.

   If a = 0 and b different 0, the solution is void (empty set). Thus, i.e. if a = 0 and b = 0, the solution is the whole lot of definition.


Ecuatia de gradul al II-lea:

    The canonical form of an equation second degree is: ax2+bx+c=0. The steps to solve this type of equation are:

Relations between the roots of second degree equation


Keywords: formulas algebra, arithmetic mean, geometric mean calculation formulas Powers abbreviated equation degree Ec. gr. II. Relations between the roots of the equation grade II




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