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www.purplemath.com/

www.purplemath.com/modules/index.htm

Practical algebra lessons that emphasize the practicalities of understanding ...

www.purplemath.com/modules/ordering.htm

An Ordered Listing of the Lessons. The Purplemath lessons have been written ...

www.purplemath.com/modules/solvelin.htm

"Linear" equations are equations with just a plain old variable like "x", rather ...

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Links to web sites offering quizzes and worksheets; reviewed by Purplemath.

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Lessons and Tutoring - Reviews ... added online lessons to its print offerings.

www.purplemath.com/modules/orderops.htm

Explains the order of operations ' PEMDAS') in plain terms, points out common ...

www.purplemath.com/modules/meanmode.htm

Explains how to compute the mean, median, mode, and range of a list of ...

www.purplemath.com/modules/ineqsolv.htm

Solving linear inequalities is very similar to solving linear equations, except for ...

www.purplemath.com/modules/orderops2.htm

Demonstrates the order of operations through worked examples. Points out a ...

Popular Q&A

Q:
Help me understand a PurpleMath example?

A:
We have the identity: x^3 - a^3 = (x - a) (x^2 + ax + a^2). In our case, we have a^3 = 8, so a = 2.-. Personally, I would have done it this way: 0 = x^3 - 8. 8 ...
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Q:
Help me understand an example from PurpleMath ?

A:
They factored the (x^3-8) into (x-2).... Source(s): Math Major
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Http //www.purplemath.com/modules/graphexp.htm http //www.purplem...

A:
R.R. Jha, Tutor. Category: Homework. Satisfied Customers: 5470. Experience: . B.Tech. R.R. Jha and 5 other Homework Specialists are ready to help you. Ask your ...
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Http //www.purplemath.com/modules/graphexp.htm http //www.purplem...

A:
Hello J Lem! Please see: file Sincerely, Sk1lz
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Q:
So yesterday im working on quadratics and now they jump from chap...

A:
1) When you find f(3) you just plug in 3 for x, so you would have f(3) = 3^2 - 7(3) = 9 - 21 = -12. Similarly, when you want to find f(a-4) you plug in a-4 for ...
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