Something so different from what I taught. I have no idea how to solve this.

$\displaystyle 24x^2z^2-2x^2z^2+x^2+z^2$

$\displaystyle (x+y+xy)-(3x+4x^2)$

NOTE: the exponents behind the z's are suppose to be -2.

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- Dec 18th 2009, 11:03 AMdeekay930Performing Operations?
Something so different from what I taught. I have no idea how to solve this.

$\displaystyle 24x^2z^2-2x^2z^2+x^2+z^2$

$\displaystyle (x+y+xy)-(3x+4x^2)$

**NOTE: the exponents behind the z's are suppose to be -2.** - Dec 18th 2009, 11:05 AMDinkydoe
Solve what actually?

I see no equation or a problem. Only two strings of variables I suppose? - Dec 18th 2009, 11:09 AMdeekay930
- Dec 19th 2009, 01:49 AMHallsofIvy
Did you notice that the x and z dependence of the first two terms are exactly the same? Combine them. If you were told "put the answers in descending order with regard to the x variable", since all three terms have $\displaystyle x^2$, they can be in any order

Quote:

$\displaystyle (x+y+xy)-(3x+4x^2)$

Quote:

**NOTE: the exponents behind the z's are suppose to be -2.**