How to match the eighth question of differential calculus in advanced mathematics, why cx+d and what is the principle?

The degree of the molecular polynomial must be just less than the degree of the denominator polynomial.

x？ +1 is a quadratic polynomial, so its molecular polynomial is a linear polynomial CX+D.

The principle is polynomial division, and the division principle is the sum of true fractions (the definition of true fractions is similar to that of true fractions). Then the numerator must be the remainder of the denominator divided by a polynomial, and the highest degree that the numerator can reach will be less than the denominator 1, so if the denominator is a polynomial of degree n, then the numerator must be a polynomial of degree N- 1.

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Mathematics and applied mathematics. . . . .

In a couple of days, I will use interesting math stories from primary school! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !

Is it natural to be bad at math?

Cut an axisymmetric shape with paper in the third grade of primary school.

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Graduation letter to classmates