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

x¹⁰ · x⁶ = x^{10 + 6}

= x¹⁶                         (Add exponents: 10 + 6 = 16)

Product of  x¹⁰ · x⁶ is x¹⁶  .