SOLUTION: (x^3)-(7x^2)+15x-9

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Question 700700: (x^3)-(7x^2)+15x-9
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Find zeros of following function:
f(x)=(x^3)-(7x^2)+15x-9
use rational roots theorem:
....0...|......1.....-7........15......-9.......
....1...|......1.....-6........9.........0 (1 is a root)
f(x)=(x-1)(x^2-6x+9)
f(x)=(x-1)(x-3)^2
zeros are: 1 and 3(mult. 2)