SOLUTION: Please help me solve this problem : Prove that cubed root of 7 increased by 1 is irrational. Hint: Consider x^3-3x^2+3x-8=0.

Algebra ->  Finance -> SOLUTION: Please help me solve this problem : Prove that cubed root of 7 increased by 1 is irrational. Hint: Consider x^3-3x^2+3x-8=0.      Log On


   

Question 1091392: Please help me solve this problem : Prove that cubed root of 7 increased by 1 is irrational. Hint: Consider x^3-3x^2+3x-8=0.
Answer by ikleyn(52794) About Me  (Show Source):
You can put this solution on YOUR website!
.
Read the lesson
    - Proving irrationality of some real numbers
in this site.


Notice: Your hint is not relevant to the problem. Ignore this hint.