You can put this solution on YOUR website! Using one of the laws of exponents, prove that any number raised to the 0'th power equals 1.
WE KNOW X^M/X^N=(X*X*X*....M TIMES)/(X*X*X.....N TIMES)=X^(M-N)
IF WE TAKE M=N IN THIS WE GET
X^M/X^M=(X*X*X*....M TIMES)/(X*X*X*.....M TIMES)=1=X(M-M)=X^0
HENCE X^0=1