SOLUTION: How can I prove this?
4. If a=-a then a=0
1.(a raise to negative 1) raise to -1=a
2. (a/b) raise to -1= b/a
3.abc=0 -> a=0 b=0 or c=0
Thank you so much for helping
Algebra.Com
Question 627836: How can I prove this?
4. If a=-a then a=0
1.(a raise to negative 1) raise to -1=a
2. (a/b) raise to -1= b/a
3.abc=0 -> a=0 b=0 or c=0
Thank you so much for helping :)
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Assume 
Add 
to both sides:
Multiply by 
Which contradicts the original assumption. Therefore, reductio ad absurdum, 
John
My calculator said it, I believe it, that settles it
