решите квадратное уравнение : 3 1/3u^2 + 3u - 3 = 0. Created by titovakristina. algebra-ru

3u^2 + 3u - 3 = 0...

August 2022 1 2 Report

решите квадратное уравнение : 3 1/3u^2 + 3u - 3 = 0

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Voxman

$(3\frac{1}{3})u^2 + 3u - 3 = 0\\ (10/3) u^2 + 3u - 3 = 0 | *3\\ 10 u^2 + 9u - 9 = 0\\ D = 81 + 4 * 9 * 10 = 81 + 360 = 441\\ u_1 = (-9 + 21)/20 = 12/20 = 3/5\\ u_2 = (-9 - 21)/20 = -3/2$

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