1) x⁶ × x⁸ = x⁶⁺⁸ = x¹⁴
2) x⁸ : x⁶ = x⁸⁻⁶ = x²
3) (x⁶)⁸ = x⁶×⁸ = x⁴⁸
4) $$ \frac{(x^4)^3 \cdot x^2}{x^9} = \frac{x^{4 \cdot 3} \cdot x^2}{x^9} = \frac{x^{12} \cdot x^2}{x^9} = \frac{x^{12+2}}{x^9} = \frac{x^{14}}{x^9} = x^{14-9} = x^5 $$
Ответ: 1) x¹⁴, 2) x², 3) x⁴⁸, 4) x⁵