With the help of the powerful function of the cardinal number of multiplication law: I have a morning =+N(m, n is a positive integer), multiplied by the electric cardinal number, the cardinal number remains unchanged and the exponent increases.

Description: The formulas of 1 all represent multiple letters, and can represent monomials or polynomials.

2. When cubic or more times the base, it can be extended to: Yes, one city = AM+N+P (where m, n and p are positive integers).

3. Used in reversible formula: AM+N = hen (m, n is a positive integer)

4. It is wrong to use the power of this method as X5 (-x) = 5× 10, because the bases are different, one is X and the other is-X, which should be X5 (-X5) = -x10.