possible zeros *

[tamiatha]

list all the possible zeros of f(x)=3x^5-7x^3+2x-15

 

[Deleted member 4993]

Re: possible zeros

list all the possible zeros of f(x)=3x^5-7x^3+2x-15

What method have you been taught for such problems?

Do you know rational root theorem?

 

[fasteddie65]

Re: possible zeros

list all the possible zeros of f(x) = 3x^5 - 7x^3 + 2x - 15

The constant term is -15; its factors are ±1, ±3, ± 5, and ±15. Call that set P.

The leading term coefficient is 3; its factors are ±1, ±3. Call that set Q.

Now consider P/Q: {±1, ±1/3, ±5/3, ±5, ±3, ±15}.

These are the possible rational zeros of the function.