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# Simple Cubic Equation

Pro Problems > Math > Algebra > Equations > Higher Degree

## Simple Cubic Equation

The following cubic equation can be readily solved using factoring methods. Solve without using the rational root theorem.

2x3 - x2 - 18x + 9 = 0

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Problem by Mr. H

## Solution

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## Similar Problems

### Eighth Degree Equation

Find all the roots - both real and complex of the eighth degree polynomial equation below:

x8 - 3x7 +2x6 - 2x5 + 6x4 -4x3 + x2 - 3x + 2 = 0

### Fourth Degree

Find, to the nearest hundredth, all four roots of the fourth degree equation below:

x4 - 5x2 - 3 = 0

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