X^4+2x^3-x^2+2x+1=0 алгебра

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Алгебра: X^4+2x^3-x^2+2x+1=0 алгебра

саша4246 · Accepted Answer

. ОДЗ: 2х+1 0       x -0,5              (-0,5;0)υ(0;+∞)            2x+1≠1       x≠0            3x+1 0       x -1/3            3x+1≠1       x≠02. Пусть log2x+1 (3x+1)=t1/t=1+2t(2t2 +t-1)/t=0   t≠0D=9t=-1          t=1/23. log(2x+1)(3x+1)=-1                        log(2x+1)(3x+1)=1/23x+1=1/(2x+1)                            3x+1=√(2x+1)(3x+1)(2x+1)=1                          9x2 +6x+1-2x-1=06x2 +5x=0                                  9x2 +4x=0x(6x+5)=0                                  x(9x+4)=0x=0  ...

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