37)x⁵·x⁴·x⁹ x⁶·x¹ =

37) $$ \frac{x^5 \cdot x^4 \cdot x^9}{x^6 \cdot x^1} = \frac{x^{5+4+9}}{x^{6+1}} = \frac{x^{18}}{x^7} = x^{18-7} = x^{11}$$

Ответ: x¹¹