Which of the following expressions cannot be simplified using the multiplication property of exponents?

The multiplication property of exponents states that when multiplying two powers with the same base, we add the exponents.
Therefore, from the options given, only option 3 is the odd one out because all the expressions don't have the same base.
Hence, the answer is
[tex]x^55^xy^8\text{ \lparen OPTION 3\rparen}[/tex]