SOLUTION: i really need help with problems like this List the possible rational roots for the equation: x3 + x2 - 4x + 4 = 0 1. {±1, ±2, ±4} 2. No answer is correct. 3. {1

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: i really need help with problems like this List the possible rational roots for the equation: x3 + x2 - 4x + 4 = 0 1. {±1, ±2, ±4} 2. No answer is correct. 3. {1      Log On


   

Question 760674: i really need help with problems like this
List the possible rational roots for the equation:

x3 + x2 - 4x + 4 = 0

1. {±1, ±2, ±4}
2. No answer is correct.
3. {1, 2, 4}
4. {±1, -2}
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Since the leading coefficient is 1, you just list all the possible factors (plus/minus) of the last term 4

They are -1, 1, -2, 2, -4, 4

So the answer is highlighted in red below

1. {±1, ±2, ±4}
2. No answer is correct.
3. {1, 2, 4}
4. {±1, -2}