(x³ +1)/(x²+2) =( (x³ +2x +(1 -2x ) ) /(x²+2) =(x³ +2x)/(x²+2) +(1-2x)/(x²+2) =
x(x² +2)/(x²+2) +(1-2x)/(x²+2) = x+(1-2x)/(x²+2).
x³ +1 = (x²+2)*x + (1-2x) . f(x) =g(x)*q(x) +r(x) .
a =b*q + r
47: 9
47 =9*5 +2
47_делимое (a);
9_делитель (b);
5_частное (q)
2_остаток (r)