SOLUTION: (x-1)(x+1)(x)=120

Algebra.Com
Question 429922: (x-1)(x+1)(x)=120



















Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
(x-1)(x+1)(x)=120


x = 5

----------

Solved by pluggable solver: SOLVE quadratic equation (work shown, graph etc)
Quadratic equation (in our case ) has the following solutons:



For these solutions to exist, the discriminant should not be a negative number.

First, we need to compute the discriminant : .

The discriminant -71 is less than zero. That means that there are no solutions among real numbers.

If you are a student of advanced school algebra and are aware about imaginary numbers, read on.


In the field of imaginary numbers, the square root of -71 is + or - .

The solution is , or
Here's your graph:
RELATED QUESTIONS

(x+1)(x+2)(x+3)(x+4) =... (answered by bucky)
(X+1)(2+x )(3+x... (answered by jsmallt9)
(x+1)(x-1)=x•x+x (answered by lynnlo)
(x+1)(x-1) (answered by checkley77)
(x+1)(x-1) (answered by checkley77)
(x+1)(x-1) (answered by checkley77)
1-x/x-1 (answered by tommyt3rd)
(x-1)(x 1) (answered by josmiceli,rohitfd)
|x+1|=x+1 (answered by josgarithmetic)