Tuesday

March 31, 2015

March 31, 2015

Posted by **anonymous** on Saturday, September 22, 2007 at 2:39am.

The answer is:

[(x^2 + 7x + 6)/x(x+z)(x-z)

I don't understand how to get that! was the z a typo? even if it's supposed to be a 2 - I don't understand!

- math -
**drwls**, Saturday, September 22, 2007 at 9:42amyes, the z is a typo

Factor 1/(x+2) out of each term and see what you get.

[1/(x+2)][12/(x-2) - (3-x)/x]

=[1/(x+2)][12x/x(x-2) - (3-x)(x-2)/x(x-2)]

={1/[(x-2)(x+2)]}[12x/x -(3-x)(x-2)/x]

={1/[(x-2)(x+2)]}[(x^2+ 7x +6)/x]

That is in the form of your answer (except for the typo "z" for 2), but it can be factored further.

= (x+6)(x+1)/[x(x-2)(x+2)]

**Answer this Question**

**Related Questions**

Math (Grade 12) - I need help with this problem (composite functions): If f(x...

Calculus (check my answers) - 10) Use the information to evaluate and compare ...

Algebra 1 Answer Re-evaluation - Multiply. Simplify your answer. 1. (n + 3/n- 5...

Algebra 1 - Multiply. Simplify your answer. 1. (n + 3/n- 5) x (n^2 - 5n) A: n^2...

math - i dont understand how this is supposed to be layed out and how to do it ...

Calculus - Please, don't assume that we've been taught this stuff because we ...

Calculus - Please, don't assume that we've been taught this stuff because we ...

Algebra 1--Please, check my answers! - Multiply. Simplify your answer. 1. (n + 3...

physics/algebra HELP!!!! - i am having so much trouble rearranging these ...

math - I asked sue a question yesterday and don't understand the answer can you ...