2X do kwadratu -2x-3
oblicz wartość dla argumentu (jedna druga ) wstawić za x
dla x = 1/2
2x^2-2x-3 = 2*1/4-2*1/2-3 = 1/2-1-3 = - 3 1/2 = -3,5
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dla x = 1/2
2x^2-2x-3 = 2*1/4-2*1/2-3 = 1/2-1-3 = - 3 1/2 = -3,5