SOLUTION: -x^2(x+2)(x^2-1) how can i find the x intercepts. I get lost factoring! Help

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Question 675147: -x^2(x+2)(x^2-1) how can i find the x intercepts. I get lost factoring! Help
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi

Re: TY, graph was for demonstration only, in this case:

Note: The factor theorem states that a polynomial f(x) has a factor (x − k)if and only if f(k) = 0

IF -x^2(x+2)(x-1)(x+1)= 0   || IF f(k) = 0, then the resulting "k(s)" are x-intercepts!

 -x^2 = 0     ||x = 0

0r (x+2) = 0  || x = -2

0r (x-1) = 0  ||  x = 1

0r (x+1)  = 0 || x = -1

-x^2(x+2)(x^2-1) = -x^2(x+2)(x-1)(x+1)  |||x-intercepts are -2,-1,0,1

Might recommend checking out downloading this FREE graphing software


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