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 ->  Algebra  -> Real-numbers -> 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       Log On

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 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(16868)   (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