Найдите числовое значение выражения :
(-4,2) x (2x + 1/2y) + 2,4(y-x) при x = 4 1/2 y= -1 1/3
(-4,2) x (2x + 1/2y) + 2,4(y-x) при x = 4 1/2 y= -1 1/3
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При х=-11/3=-3 2/3
у=4 1/2 =>2.5•4 1/2 -10.8•(-3 2/3)=
=11.25+39.6=50.85