4(3х+4)(х+2)(1-2х)-3(4х+3)(2-х)(1+2х)=-43(2х+3)(х+2)-12 решите плес для проверки ! !

4*(3*x+4)*(x+2)*(1-2*x)-3*(4*x+3)*(2-x)*(1+2*x) = -43*(2*x+3)*(x+2)-12

32 - 68*x^2 - 24*x - 24*x^3 - (3*(4*x + 3))*(2 - x)*(1 + 2*x) = -43*(2*x+3)*(x+2)-12
32 - 68*x^2 - 24*x - 24*x^3 - 18 - 51*x - 18*x^2 + 24*x^3 = -43*(2*x+3)*(x+2)-12
32 - 68*x^2 - 24*x - 24*x^3 - 18 - 51*x - 18*x^2 + 24*x^3 = - 258 - 301*x - 86*x^2 - 12

284 + 226*x = 0
226x=-284
x= - 284/226  | :2
x= - 142/113