X(x^2+2x+1)=2(x+1) решите уравнение - вопрос №752961622121 от AnnaVorob1999 23.09.2020 02:37

Question

Алгебра: X(x^2+2x+1)=2(x+1) решите уравнение

AnnaVorob1999 · Answer

X (x^2 + 2x + 1) = 2(x + 1)x (x + 1)^2 - 2(x + 1) = 0(x + 1) (x (x + 1) - 2) = 0 1) x + 1 = 0 x1 = - 12) x (x + 1) - 2 = 0x^2 + x - 2 =  0D = 1 +  8 = 9 x2 = ( - 1 + 3)/2 = 2/2 = 1;x3 = ( - 1 - 3)/2 = - 4/2 = - 2ответ- 2;  - 1; 1...