exam Maths Puzzle Numerical Ability

I am suppost to simplify the following and execute all multiplication and division: (x+3)^3

This is what I have: x^3+9x^2+27x+27 not sure if it is right
Thanks, Lackinmath

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exam Other Question
The value of a "Mint State-63" (uncirculated) 1950 Jefferson nickel minted at Denver is 8/7 the value of a 1945 nickel in similar condition minted at Philadelphia. Together, the to Use the quotient rule to simplify the expression:
(-11)21
-------
(-11)19
Note- The problem reades -11 to the 21 power divide by -11 to the 19 power.
Thanks,
Pat