x^3+6x^3+11x+6 초 2 분해 인수,

x^3+6x^3+11x+6 초 2 분해 인수,

X^3+6X^2+11X+6
=(X^3+X^2)+(5X^2+5X)+(6X+6)
=X^2(X+1)+5X(X+1)+6(X+1)
=(X+1)(X^2+5X+6)
=(X+1)(X+2)(X+3)