Ifx= 12−√3Prove that x²-4x+1=0 – InterviewSolution

1.

Ifx= 12−√3Prove that x²-4x+1=0

Answer»

Step-by-step explanation:

7k2 + 12k + 4) + 6. THUS, if X has the form x = 7k + 3 or the form x = 7k + 4, then x2 − 2 is an integer MULTIPLE of 7 and so x2 ≡ 2 (mod 7).

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