Math Is Fun Forum

  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

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#1 2007-05-09 21:31:09

Identity
Member
Registered: 2007-04-18
Posts: 934

Quartic!?

Please show me how to solve

Last edited by Identity (2007-05-09 22:04:52)

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#2 2007-05-09 22:15:37

JaneFairfax
Member
Registered: 2007-02-23
Posts: 6,868

Re: Quartic!?

Okay, x = −1 is a solution. Take out the factor (x+1) and try and spot another solution in the smaller cubic equation.

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#3 2007-05-10 05:55:42

saudi_boy
Member
Registered: 2006-11-01
Posts: 41

Re: Quartic!?

First we use synthetic division..

9OX19029.jpg


then we also use the same mathod with another number  -2
to solve

4QW19118.jpg


now we can factor

   or use the quadratic equation to solve


the solution set (3.-2.-1.4)

Last edited by saudi_boy (2007-05-10 05:57:09)

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