Posted by **Shawn** on Tuesday, March 15, 2011 at 6:04pm.

I have been out of school for a long time and not understanding these questions. Please help

why is 5^0=1

can you explain when (-3)^n is positive and when it is negative.

- Algebra Please Help -
**bobpursley**, Tuesday, March 15, 2011 at 6:08pm
By definition, anything to the zero power is 1.

any real number taken to a positive power is positive.

Any negative number taken to even power is positive, if taken to a negative power, it is negative.

(-3)^2= +9

(-3)^3=-27

## Answer this Question

## Related Questions

- Algebra Please Help - I have read and read this promble and I just am not ...
- algebra - Could someone please help me with this? (1) If x is a nonzero real ...
- Algebra 1 REPOST - Please Help! - I have been trying to figure this out for a ...
- Statistic help ASAP Please - The tests done to determine if someone is HIV ...
- policial science - I have to do an interview so can you guys help me out ...
- algebra - Simplify. Do not use negative exponents in the answer. -25a^-2/10b^-4 ...
- Algebra - why is 5^0=1 Not understanding it. also can you explain when (-3)^n is...
- math - in algebra if you have a problem like -2+2 will the answer be negative or...
- Algebra I - I have been trying to figure this out for a long time to no avail. ...
- Algebra Please Help - Am not understanding this. Could someone please explain to...