Question

Разложите на множители:
x^4-6x^3+54x-81

Answer 1

$x^{4} -6 x^{3} +54x-81= x^{4} -81-6 x^{3} +54x= \ =( x^{2} -9)( x^{2} +9)-6x( x^{2} -9)=( x^{2} -9)( x^{2} +9-6x)$

Answer 2

(x+3)(x-3)^3