Friday, March 13, 2009

Aim: How do we evaluate algebraic expressions?

12x= 12*X...12 x X...X x 12...X*12

4/y= 4/y

3xy/2= (3x)y)/2...3yx/2

The difference between a variable and a constant is that a variable is a number replaced by a letter that can be varied or changed. A constant is a value that never changes.

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