a^n=1/-n or a^-n+1/a^n
a^m*a^n=a^m+n
a^m/a^n=a^m-n
(a^n)^m=a^n*m
*except for scientific notation, there should not be any negative exponents.
X^y*X^z=X^y+z
a^m*a^n=a^m+n
a^m/a^n=a^m-n
(a^n)^m=a^n*m
*except for scientific notation, there should not be any negative exponents.
X^y*X^z=X^y+z