H(x) = x^3 + 4x^2 -4x-16

I have found all of the intercepts but I dont know which equation to plug numbers into in order to graph this function, do I plug into the original function listed above, or my final simplified answer H(x)= (x+4)(x+2)(x-2).

Please help thanks!

Question

H(x) = x^3 + 4x^2 -4x-16

I have found all of the intercepts but I dont know which equation to plug numbers into in order to graph this function, do I plug into the original function listed above, or my final simplified answer H(x)= (x+4)(x+2)(x-2).

Please help thanks!

anonymous · Answer

H(x)= (x+4)(x+2)(x-2) = x^3 + 4x^2 -4x-16 so

it makes no difference.

anonymous · Answer

then why are my graphs turning out ridiculous? could you draw what this graph should look like?

anonymous · Answer

http://www.wolframalpha.com/input/?i=x^3+%2B+4x^2+-4x-16&x=0&y=0

anonymous · Answer

woah thats awesome thank you!

anonymous · Answer

ur welcome