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**qweiop90** not really understand . zz x0 is , x1 is???

sry in lower 6, we havent learn this kind of things yet..

2)given that f(x) =x^n-nx+n-1 for the integer n>1. by considering f(x) and f'(x), show that f(x)=(X-1)^2 X g (x) is true for all polynomial g(x) with interger coefficients.

hence , or otherwise

1) show that 3^2n - 8n -1 is divisiblke by 64 for all intergers n>1

2) show that the equation X^4 -4x+3 = 0

. ANYWAY, i had solve num1 , but for num2 , the question asked me to prove? so, how? i should let n = 4 ?