13)(x¹²) ⁵.(x⁴)¹³ (x¹⁴)⁸:(x³)¹⁶

$$\frac{(x^{12})^5 \cdot (x^4)^{13}}{(x^{14})^8 : (x^3)^{16}} = \frac{x^{12 \cdot 5} \cdot x^{4 \cdot 13}}{x^{14 \cdot 8} : x^{3 \cdot 16}} = \frac{x^{60} \cdot x^{52}}{x^{112} : x^{48}} = \frac{x^{60+52}}{x^{112-48}} = \frac{x^{112}}{x^{64}} = x^{112-64} = x^{48}$$

Ответ: x⁴⁸