Posted by **SoConfused** on Thursday, September 30, 2010 at 10:24am.

can someone please help me write a proof for the following:

--a(-a)=a

- Math/Algebra -
**Ms. Sue**, Thursday, September 30, 2010 at 10:38am
-1(-1) = 1

## Answer this Question

## Related Questions

- algebra - Can someone please help write a proof for the following. given: JKLM ...
- college math - I posted this problem earlier, but I still can't figure it out. ...
- Maths- very very simple - can someone tell me what the title of this proof is? a...
- Math - Please help me with this problem: A bourbon that is 51 proof is 25.5% ...
- algebra - Can someone please help wright a proof for the following. given: JKLM ...
- Abstract Algebra - If 2^n>n^2 and n>5, then 2^n+1>(n+1)^2 Proof: ...
- college algebra - Solve the following inequality. x^3+9x^2-108 less or equal to ...
- Proof reading - Hello, my research paper is due Friday, and I am done with it. I...
- Math - I am in 7th Grade and have some holiday homeworks. Please help. 1. Write ...
- math - A bourbon that is 51-proof is 25.5% alcohol by volume while one that is ...

More Related Questions