Ответы на вопрос:
(1 : 6/11 - 2 3/4 * 0,5) * 4 4/11=(1*11/6 - 11/4 * 0,5) * 48 /11==(11/6 - 11/8) * 48/11=(44/24 - 33/24) * 48 /11=11/24*48/11=48/24=2 x^2+2x-3=0d = b² - 4ac = 22 - 4·1·(-3) = 4 + 12 = 16x1 = ( -2 - √16)/(2·1) = ( -2 - 4)/2 = -6/2 = -3x2 = ( -2 + √16)/(2·1) = (-2 + 4)/2 = 2/2 = 1
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