(a⁶)² : (a⁴)⁵ =
a⁵/a⁹=
a¹³/a²³=
a¹⁸:a²⁰/a⁹*a¹²=
/ <-- kreska ułamkowa
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a^5/a^9= a^-4
a^13/a^23= a^-10
a^18:a^20 / a^9*a^12= a^-2/a^21=a^-23
^-do potegi
a⁵/a⁹=a ^5-9 =a ^-4 = (1/a)^4
a¹³/a²³=a^13-23=a^-10= (1/a)^10
a¹⁸:a²⁰/a⁹*a¹²= a^18-20 / a^9+12 = a^-2 / a^21 = a^-2-21=a^-23 = (1/a)^23