y = x^6-10x^5-7x^4+80x^3+12x^2-192x
= x(x^5-10x^4-7x^3+80x^2+12x-192)
you know any rational roots will be factors of 192. There appear to be none except x=0.
If you visit wolframalpha.com and enter the formula, you will find one root near x=10, but that is the only real nonzero root.
To see what happens near x=0, try visiting
http://rechneronline.de/function-graphs/
set the x range -10 to 10
y -1000 to 1000
f(x)=x^6-10*x^5-7*x^4+80*x^3+12*x^2-192*x
how to find the answer an its graph???
1 answer