\( \begin{array}{ll}\text { B2) } \frac{x^{10}}{x^{4}} & \text { B3) } \frac{a^{17}}{a^{2}}\end{array} \)

To simplify the expressions, remember that when you divide powers with the same base, you subtract the exponents. For the first expression, \( \frac{x^{10}}{x^{4}} \): Subtract the exponent of the denominator from the exponent of the numerator: \( 10 - 4 = 6 \). So, \( \frac{x^{10}}{x^{4}} = x^{6} \). For the second expression, \( \frac{a^{17}}{a^{2}} \): Again, subtract the exponent of the denominator from the numerator: \( 17 - 2 = 15 \). Therefore, \( \frac{a^{17}}{a^{2}} = a^{15} \). In summary, \( \frac{x^{10}}{x^{4}} = x^{6} \) and \( \frac{a^{17}}{a^{2}} = a^{15} \).