Friday

February 27, 2015

February 27, 2015

Posted by **allison--Please help!!** on Thursday, December 27, 2012 at 7:01pm.

f(x)=3x^4-10x^3-12x^2+122x-39

Please show wrok, I do not understand how to do this.

- calculus -
**Steve**, Thursday, December 27, 2012 at 11:44pmThe 39 and 3 tempt me to try roots like 1,3,1/3. Go for the low-hanging fruit first

use synthetic division to find that

f(-3)=0, so

f(x) = (x+3)(3x^3-19x^2+45x-13)

f(1/3) = 0, so

f(x) = (x+3)(3x-1)(x^2-6x+13)

there are no more real roots

**Answer this Question**

**Related Questions**

calculus--please help!! - find the complete zeros of the polynomial function. ...

calculus - find the complex zeros of the polynomial function. write f in ...

pre-calculus - find the complex zeros of the polynomial function. write F in the...

algebra - Find the complex zeros of the polynomial function. Write f in factored...

college algebra - find the complex zeros of the polynomial function. write f in ...

college algebra - find the complex zeros of the polynomial function. write f in ...

college algebra - find the complete zeros of the polynomial function. write f in...

Find the complex zeros - Find the complex zeros of the polynomial function. ...

math - Find the complex zeros of the polynomial function, and write f in ...

Algebra - Find the complex zeros of the following polynomial function. Write f ...