Question 675912
is x-2 a factor of x^5-7x^4+30x^2-5 how do we know?
-------
x-2 is a factor if f(2) = 0
-----
Your Problem:
f(2) = 32 - 7*16 + 30*4 - 5 = 152 - 117 is not zero,
so x-2 is not a factor.
==========================
Cheers,
Stan H.