-

citing


Algebra ~

..Algebra is a part of mathematics which solves problems by representing quantities by symbols (often called variables), expressing the relationships between the quantities as equations or inequalities, and manipulating these expressions according to well defined rules in order to find additional properties of the quantities and solve the problem.

This course course assumes that you have already had considerable experience in using algebra, and that the material in this chapter is, for the most part, simply review. The remainder of this section will deal with rules for manipulating algebraic expressions, for solving linear and quadratic equations in one unknown, for solving systems of equations in more than one unknown, and for solving inequalities..



http://www.msc.uky.edu/ken/ma109/lectures/review.htm#seg1


-

-


Al links

http://encyclopedia.thefreedictionary.com/algebra


-

Solving Exp Eq




http://www.sosmath.com/algebra/solve/solve7/s75/s75.html  

--Last edited by ferme on 2007-02-02 06:50:48 --

Factorial n History

http://factorielle.free.fr/biographies/biographies_en.html

http://www.pinkmonkey.com/studyguides/subjects/algebra/chap4/a0404301.asp



Methods Of Solving Quadratic Equations  

--Last edited by zee on 2007-02-11 23:21:44 --

http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Al-Khwarizmi.html

-



Translating word problems into math ..



Translate "the sum of 8 and y" into an algebraic expression.
This translates to "8 + y"

Translate "4 less than x" into an algebraic expression.
This translates to "x – 4"

Translate "x multiplied by 13" into an algebraic expression.
This translates to "13x"

Translate "the quotient of x and 3" into an algebraic expression.
This translates to " x/3"

Translate "the difference of 5 and y" into an algebraic expression.
This translates to "5 – y"

Translate "the ratio of 9 more than x to x" into an algebraic expression.
This translates to "(x + 9)/x"

Translate "nine less than the total of a number and two" into an algebraic expression, and simplify.
This translates to "(n + 2) – 9", which then simplifies to "n – 7"

Here are some more wordy examples:

The length of a football field is 30 yards more than its width. Express the length of the field in terms of its width w.
Whatever the width w is, the length is 30 more than this. Recall that "more than" means "plus that much", so you'll be adding 30 to w.

The expression they're looking for is "w + 30".





-  

--Last edited by saucer on 2007-06-02 01:46:44 --

-


Abelian groups:

http://www.math.usf.edu/~eclark/algctlg/abelian_gp.html




-

-

Complex numbers Q&A
http://www.algebra.com/algebra/homework/complex/Complex_Numbers.faq.question.79723.html



-  

--Last edited by saucer on 2007-06-02 01:47:33 --

-




. If there are two or more negative or subtract signs, then  simplify.

   16 - - 4 = 5x



-

-

algebra intro ...



http://www.mathleague.com/help/algebra/algebra.htm



-