Rozwiąż wartość liczbową wyrażenia: 1/2 abc-(4ab + 2abc) + (-bc + 5ab) = ......... dla a=-2 , b=1/2 , c=-4
1/2 *(-2* -4* 1/2) - (4*-2*1/2 + 2*-2*1/2*-4)+(-1/2*-4 + 5*-2*1/2) = 1/2*4 - (-4+8)+(2-5) = 2-4-3=-5
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1/2 *(-2* -4* 1/2) - (4*-2*1/2 + 2*-2*1/2*-4)+(-1/2*-4 + 5*-2*1/2) = 1/2*4 - (-4+8)+(2-5) = 2-4-3=-5