Wednesday

August 27, 2014

August 27, 2014

Posted by **Anonymous** on Friday, May 7, 2010 at 7:47pm.

P(x) = x^4 - 5x^3 + 7x^2 - 5x + 6; -i

- Algebra 2 -
**bobpursley**, Friday, May 7, 2010 at 8:03pmwell, if one root is -i, it has another root +i, as complex roots will appear in conjugates. (x+i)(x-i)=(x^2+1) is a factor. So, divide that into the polynomial....

(x^4-5x^3+7x^2-5x+6)/(x^2+1)=

x^2-5x+6=(x-3)(x-2)

so the roots are i, -i, 3,2

**Related Questions**

Algebra - Consider the polynomial: f(x) = 2x^3 – 3x^2 – 8x – 3. (a) By using the...

Algebra - Consider the polynomial f(x) = 3x3 – 2x2 – 7x – 2. (a) By using the ...

algebra - Consider the polynomial f(x) = 3x3 – 2x2 – 7x – 2. (a) By using the ...

algebra - Consider the polynomial f(x) = 3x3 – 2x2 – 7x – 2. (a) By using the ...

Algebra - Can someone please explain how to do these problems. 1)write a ...

Math urgent - Find a degree 6 polynomial with - 8 as a root, no other roots, and...

Math - Consider the polynomial f(x) = 2x^3 – 3x^2 – 8x – 3. (a) By using the ...

math 111 urgent please help - Find a degree 6 polynomial with - 8 as a root, no ...

algebra!!!! please help me!!!! - A number is called algebraic if there is a ...

calc - A basic fact of algebra states that c is a root of a polynomial f(x) if ...