a^n*a^m=a^(n+m)

a^n÷a^m=a^(n-m)

(ab)^n=a^n*b^n

a^(-n)= 1/a^n

Regular formula

Same base powers's multiplication: the base is a constant and the exponent is a power;

Same base powers's division: the base is unchanged, and the exponent is subtracted from the power;

Exponential power of power: equal to the power of product quotient of each factor.

Fractional power: numerator and denominator rise respectively, and the exponent remains unchanged.