Решите уравнение 4x^2=4(4x+1)-x. Created by Нeyдaчник. algebra-ru

Решите уравнение 4x^2=4(4x+1)-x...

Нeyдaчник @Нeyдaчник

June 2022 1 14 Report

Решите уравнение 4x^2=4(4x+1)-x

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ShirokovP

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4x^2 = 16x + 4 - x
4x^2 - 16x - 4 + x = 0
4x^2 - 15x - 4 = 0
D = 15^2 - 4*(4)*(-4) = 225 + 64 = 289
x1 = (15 + 17)/8 = 32/8 = 4
x2 = (15 - 17)/8 = - 2/8 = - 1/4

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