Odpowiedź:
a)
8 - xy = 8 - (-1) * (-2) = 8 + 1 * (-2) = 8 - 2 = 6
b)
(3x + y) : 2 = [3(-1) + (-2)] : 2 = (-3 - 2) : 2 = -5 : 2 = 2,5
dla x = -1 i y = -2
Szczegółowe wyjaśnienie:
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Odpowiedź:
a)
8 - xy = 8 - (-1) * (-2) = 8 + 1 * (-2) = 8 - 2 = 6
b)
(3x + y) : 2 = [3(-1) + (-2)] : 2 = (-3 - 2) : 2 = -5 : 2 = 2,5
dla x = -1 i y = -2
Szczegółowe wyjaśnienie: