Ok, I hope there’s a math wiz out there who can help me.(adsbygoogle = window.adsbygoogle || []).push({});

I have to factor: [tex]f (x)=3x^4-8x^3-5x^2+16x-5[/tex]

Just from looking at it, you know that possible values for x are: ±1, ±5/3, ±1/3, ±5

However, if you plug in these real numbers, none of them work, therefore meaning that x is an irrational number and is complex/imaginary. Note that I’m using synthetic division to solve the equation.

So, my question would be, how do I solve for irrational numbers? The quadratic equation will probably be required, but I’m still not sure how to get the final answer.

I’d appreciate an answer along with the steps to solving the problem. This is for extra credit in my class, so we have not been taught yet, and I’d like to get extra credit. I realize I haven't given much time for this equation to be solved, but Id appreciate an answer by Monday.

**Physics Forums - The Fusion of Science and Community**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Factoring irrational equations

Loading...

Similar Threads - Factoring irrational equations | Date |
---|---|

I Rational powers of irrational numbers | Mar 9, 2018 |

I Question about the Divisor Function/Sums and Project Euler | Feb 16, 2018 |

I Why is Graham's number a factor of 3? | Jan 11, 2018 |

B How can I calculate this hyperbola's equation? | Nov 19, 2017 |

B What are the different methods of factoring polynomials? | Jul 1, 2017 |

**Physics Forums - The Fusion of Science and Community**