1. $$x^6 \cdot x^8 = x^{6+8} = x^{14}$$
2. $$x^8 : x^6 = x^{8-6} = x^2$$
3. $$(x^6)^8 = x^{6 \cdot 8} = x^{48}$$
4. $$ \frac{x^4 x^3}{x^2} = \frac{x^{4+3}}{x^2} = \frac{x^7}{x^2} = x^{7-2} = x^5$$
Ответ: 1) $$x^{14}$$, 2) $$x^2$$, 3) $$x^{48}$$, 4) $$x^5$$