6х(х+2)-0,5(1,5х^2-7х)-3=0
6x² +12x - 0.75 x² + 3.5 x - 3 = 0
5.25 x² + 15.5x - 3 = 0
D = 15.5² + 12 * 5.25 = 240.25 + 63 = 303.25
x(1) = (-15.5 + √303.25) / 10.5
x(2) = (-15.5-√303.25) / 10.5
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6х(х+2)-0,5(1,5х^2-7х)-3=0
6x² +12x - 0.75 x² + 3.5 x - 3 = 0
5.25 x² + 15.5x - 3 = 0
D = 15.5² + 12 * 5.25 = 240.25 + 63 = 303.25
x(1) = (-15.5 + √303.25) / 10.5
x(2) = (-15.5-√303.25) / 10.5