Since base is common, apply the product of powers property: a^m · aⁿ = a^{m + n}.

n³ · n⁵ = n^{3 + 5}

= n⁸                        (Add exponents: 3 + 5 = 8)

Since base is common, apply the quotient of powers property: 

= n⁶                           (Subtract exponents: 8 – 2 = 6)

Quotient of  is  n⁶.