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(x³)² * (x²)⁴ x⁶ * x⁸ x ⁶⁺⁸
------------------- = ................. = -------------- = x¹⁴ : x¹² = x¹⁴⁻¹² = x² = 0,2² = 0,04
(x⁴)³ x¹² x¹²
b)
[(x⁸ : x⁶)³ + 3 * (x² * x⁴)/[x² * 4 * (x⁶ : x⁵)] = [(x⁸⁻⁶)³ + 3 * x²⁺⁴]/[x² * 4 * x⁶⁻⁵] =
= (x⁶+ 3x⁶)/(x² * 4x) = 4x⁶: 4x³ = x⁶⁻³ = x³ = (- 1 2/3)³ = ( - 5/3)³ = - 125/27 = - 1 17/27