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x³-x=1994(x-1)(x+1), algebra











































what are the three values of x for which x^3-x=1994(x-1)(x+1)

Comments for x³-x=1994(x-1)(x+1), algebra

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Aug 18, 2010
Roots of a 3rd Degree Equation
by: Staff


Roots of a 3rd Degree Equation


The question:

What are the three values of x for which x^3-x=1994(x-1) (x+1)



The answer:

Solving this problem analytically by hand is possible, but complicated.

However, using trial and error, this problem is easy to solve.

The three roots are:

X1 = 1

X2 = -1

X3 = 1994


To verify that the third root (X3 = 1994) is valid, rearrange the equation as shown below, and then substitute the 1994 for x:

X^3 – 1994*X^2 –X + 1994 = 0



Thanks for writing.


Staff
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