(3-x)=+2(x-3)+=3 (2x+1)²=13+4x² (6x-1)(1+6x)-4x(9x+3)=-145 - вопрос №32332113461164931457792868 от nalininegi 16.01.2020 18:53

Question

Математика: (3-x)=+2(x-3)+=3 (2x+1)²=13+4x² (6x-1)(1+6x)-4x(9x+3)=-145 подробней

nalininegi · Answer

=- 3 + x = 2x - 6 + 3х - 2х = - 6 + 3 +3- х = 0  х = 0(2х + 1)^2 = 13 + 4x^24x^2 + 4x + 1 = 13 + 4x^24x^2 - 4x^2 + 4x = 13 - 14x = 12x = 3= 6х - 1 + 36х^2 - 6x - 36x^2 - 12x = - 14536x^2 - 36x^2 -12x = - 145 +1 -12x = - 14412x = 144x = 12...