Please guys help me to find a method to solve cubic formulas. I don't need to find solutions I need to make the formula like this x^3+4x^2+x-6 ---> (x+2)(x+3)(x-1) Most of us can quickly break a quadratic formula but how can I quickly break a cubic formula🤔
Easy Math Editor
This discussion board is a place to discuss our Daily Challenges and the math and science related to those challenges. Explanations are more than just a solution — they should explain the steps and thinking strategies that you used to obtain the solution. Comments should further the discussion of math and science.
When posting on Brilliant:
*italics*
or_italics_
**bold**
or__bold__
paragraph 1
paragraph 2
[example link](https://brilliant.org)
> This is a quote
\(
...\)
or\[
...\]
to ensure proper formatting.2 \times 3
2^{34}
a_{i-1}
\frac{2}{3}
\sqrt{2}
\sum_{i=1}^3
\sin \theta
\boxed{123}
Comments
The cubic formula is a little big to remember(for me atleast), but if you are able to find even one root (let’s say α) of the cubic by guessing, then on division with x-α, it will reduce to a quadratic which is easily solvable (let’s say the quadratic had roots β and γ). The final result is that the cubic will equal a(x-α)(x-β)(x-γ) where is “a” is the coefficient of x3
There are two methods That I know (always works) :
The Cubic Formula, Cardino's Method