Posted by Richard on .
I need help finding the roots and the hole for this problem.
well first of all divide top and bottom by 4
= (6x^3+17x^2+6 x-8)/(x^3+14x^2+59x+70)
try factoring the top. I went to an online graphing program and found roots of the top at
-2 , .5, - 1 1/3
(x+2)(2x-1)(3x+4) that works
now the bottom same way
for the bottom roots are
-7, -.5 , -2
well x+2 cancels so we really have
[ (2x-1)(3x+4) ] / [ (x+7)(2x+1) ]
that has zeros at 1/2 and -4/3
and is undefined at -7 and -1/2