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192 = 2*2*2*2*3*4
Grupujemy czynniki:
192 = (2*2)*(3*2)*(4*2) = 4*6*8
Można też rozwiązywać równanie (x-2)*x*(x+2) = 192 (czyli x³-4x-192 = 0):
x³-4x-192 = 0 <=> (x-6)(x²+6x+32) = 0 <=> x=6
x-2 = 4, x+2 = 8