SOLUTION: Please help me solve this problem: {{{x^3-2x^2-7x-4=0}}}

Question 236937: Please help me solve this problem:

Answer by Theo(13342) (Show Source): You can put this solution on YOUR website!
can be solved as follows:

divide by to get:

factor to get:

x = 4 or x = -1

I looked at the original equation and figured that if there was a way to divide (x-?) into it, then the ? had to be either 4 or a factor of 4 because that would make the division come out even.

I tried (x-2) into x^3 - 2x^2 - 7x - 4 but that didn't work.

I then saw that (x-4) might work and tried it.

It did.

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