Question 627868
Use Law of Exponents for Product. In symbol: {{{(x^m)(x^n)=x^(m+n)}}}, you add the exponent when multiplying expressions with the same base.
In your answer, you applied the other rule which is the Law of Exponents for Power. In symbol: {{{(x^m)^n = x^(mn)}}}.

The correct answer using the Law of Exponents for product is {{{highlight(-20x^7y^5)}}}