1.Wyrazenie (1-2x)do kwadratu - 3(x+pierwiastek z 2 )(x-pierwiastek z 2) dla x = 2 przyjmuje wartosc?
1+4x+4x"kwadrat"-3(x"kwadrat"-2)
1-4x-4x"kwadrat"-3x"kwadrat"+6
7-4x-7x"kwadrat"
7-8-14=-15
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1+4x+4x"kwadrat"-3(x"kwadrat"-2)
1-4x-4x"kwadrat"-3x"kwadrat"+6
7-4x-7x"kwadrat"
7-8-14=-15