Thursday

September 18, 2014

September 18, 2014

Posted by **michelle** on Monday, April 29, 2013 at 11:10am.

f(x)=x^4+2x^3-7x^2-8x+12

I am totally lost, please help?

- pre calculus -
**Steve**, Monday, April 29, 2013 at 11:38amall the rational possibilities are

±1,±2,±3,±4,±6,±12

That's a lot, but it's easy to check the small values. A little synthetic division shows that

f(x) = (x-1)(x^3+3x^2-4x-12)

= (x-1)(x-2)(x^2+5x+6)

= (x-1)(x-2)(x+2)(x+3)

**Answer this Question**

**Related Questions**

rational zeros theorem - Use the rational zeros theorem to find all the real ...

College algebra - Use the rational zeros theorem to find all the real zeros of ...

college algebra - use rational zeros theorem to find all the real zeros in the ...

calculus - use rational zeros theorem to find all the real zeros of the ...

college algebra - 1. solve the following logarithmic equation log_8(x+8)+log_8(x...

college algebra - use the rational zeros theorem to find all the real zeros of ...

College Algebra - Use the rational zeros theorem to find all the real zeros of ...

math - usethe rational zero theorem to find all real zeros of the polynomisl ...

calculus - use the rational zeros theorem to find all the real zeros of the ...

college algebra - use the rational zeros theorem to find all the real zeros of ...