Saturday

July 26, 2014

July 26, 2014

Posted by **Katie** on Friday, October 28, 2011 at 12:40pm.

8/8z+7

I think the expression is undefined for all real numbers

- help -
**Steve**, Friday, October 28, 2011 at 12:46pmIf the fraction is 8/(8z) + 7 you are right.

If it is 8/(8z+7) then the answer is different.

- help -
**Steve**, Friday, October 28, 2011 at 12:47pmOops. If 8/(8z) + 7, then it is undefined only for z=0

In general, a rational expression is undefined where the denominator is zero.

- help -
**KATIE A**, Friday, October 28, 2011 at 12:48pmThank you steve

- help -
**Steve**, Friday, October 28, 2011 at 12:53pmMy pleasure. Now, go forth and solve similar problems with confidence!

- help -
**Katie**, Friday, October 28, 2011 at 12:56pmI will try my best

**Related Questions**

Algebra plz check - Find all numbers for which the rational expression is ...

Algebra-Undefined - Find all numbers for which the rational expression is ...

Algebra 2 - Find all numbers for which the rational expression is undefined. p^3...

Math - Find all numbers for which the rational expression is undefined. m^3-8m...

algebra - Find all numbers for which the rational expression is undefined. r^3-...

algebra - find all numbers for which the rational expression is undefined 8/x-4

math - find all numbers for which the rational expression is undefined (1/w-6)

Algebra - Find all the numbers for which the rational expression is undefined s^...

ALGEBRA - Find all numbers for which the rational expression is undefined. -2/9v

Algebra 1b - Find all numbers for which the rational expression is undefined. p^...