Posted by **huda** on Monday, December 10, 2012 at 1:40pm.

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???

- calculus -
**Steve**, Monday, December 10, 2012 at 3:45pm
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

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