Homework Help: alg 2

Posted by MILEY!:)7 on Monday, June 16, 2008 at 8:19pm.

find all zeros of the following function:
f(x)=x^3-x^2+4x-4
I have (x^2+4)(x+1)

so one zero is 1. how do i find the two other zeros.

alg 2 - Damon, Monday, June 16, 2008 at 8:22pm
if +1 is a zero, (x-1) is a factor because (x-1) is zero when x = 1
alg 2 - Damon, Monday, June 16, 2008 at 8:27pm
I have
(x^2+4)(x-1)
then when is (x^2 + 0 x +4 )= 0??
x = [ 0 +/- sqrt (0 -16) ] / 2
x = +/- 2 i (imaginary roots)

Answer this Question

Related Questions

math - Find all the zeros of the function. f(x) = x^3 + 11x^2 + 39x + 29 I found...
college algebra - 1. solve the following logarithmic equation log_8(x+8)+log_8(x...
math - use the rational zero theorem to find all the real zeros of the ...
college allgebra - f(x)=x^6+4x^5+4x^4+3x^3-x^2-5x+4 Find the maximum number of ...
Factor Theorem Math - Use the Factor Theorem to determine the rational zeros of ...
Math( help please ! ) - For what values of k will the function f(x)=3x^2+4x+k=0 ...
Pre-Cal - Find the greatest integral upper bound of the zeros for the following ...
alg 2 - given that one of the zeros of the funiction f(x)=x^3-8x^2+11x+20 is -1...
algebra - 1)A.f(x)= x^2+4 B.f(x)= x^2-4x^2+4x-16 C.f(x)= x^2+4x^2+4x+16 D.f(x)= ...
Algebra - Can someone please explain how to do these problems. 1)write a ...

For Further Reading

First Name:
School Subject:
Answer: