[1/a do potęgi 18 : 1/a do potęgi 20 ] : [ a do potęgi 9 * 1/a do potęgi 12] = ?
napiszcie obliczenia i wynik ;3
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(1/a do -2) :( 1/a do -9 * 1/a do 12)= 1/a do -2: 1/a do 3= 1/a do -5= a do 5,
a różne od 0