*Determine whether the following assertions are true or false. if true, prove the result, and if false, give a counter example

3. If b/(a^2-1) then b/(a^4-1).

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- Sep 8th 2009, 05:04 PMmanusformNumber theory (Primes)
*Determine whether the following assertions are true or false. if true, prove the result, and if false, give a counter example

3. If b/(a^2-1) then b/(a^4-1). - Sep 8th 2009, 05:07 PMBruno J.
$\displaystyle a^4-1=(a^2-1)(a^2+1)$

- Sep 8th 2009, 05:10 PMmanusformpls can u elaborate it
bruno can u pls elaborate it. i don't get it..is it false or true? pls

- Sep 8th 2009, 05:15 PMBruno J.
If $\displaystyle m|a$, does $\displaystyle m|ab$ for every $\displaystyle b$? What does "$\displaystyle m|a$" mean?