Сделайте, пожалуйста: |x|x-1|-2x|=x^2-2, , у меня не сошлось с ответом.

|x |x - 1| - 2 * x| = x ^ 2 - 2;{ x |x - 1| - 2 * x = x ^ 2 - 2; - (x |x - 1| - 2 * x) = x ^ 2 - 2; { x |x - 1| - 2 * x = x ^ 2 - 2; x |x - 1| - 2 * x = - x ^ 2 + 2;{ x |x - 1| = x ^ 2 + 2 * x - 2; x |x - 1| = - x ^ 2 + 2 * x + 2; { x (x - 1) = x ^ 2 + 2 * x - 2; - x (x - 1) = x ^ 2 + 2 * x - 2; x (x - 1) = - x ^ 2 + 2 * x + 2;- x (x - 1) = - x ^ 2 + 2 * x + 2; { x ^ 2 - x = x ^ 2 + 2 * x - 2; - x ^ 2 + x = x ^ 2 + 2 * x - 2; x ^ 2 - x = - x ^ 2 + 2 * x + 2;- x ^ 2 + x = - x ^ 2 + 2 * x + 2; { 3 * x - 2 = 0; 2 * x ^ 2 - x - 2 = 0; 2 * x ^ 2 - 3 * x - 2 = 0;x + 2 = 0;{ x = 2 / 3; 2 * x ^ 2 - x - 2 = 0; D = 1 - 4 * 2 * (- 2) = 17;x12 = (1 +- 17 ^ 0,5) / 4;2 * x ^ 2 - 3 * x - 2 = 0;D = 9 - 4 * 2 * (-2) = 25;x12 = (3 + - 5) / 4;x = - 2;{ x = 2 / 3;x = (1 + 17 ^ 0,5) / 4;x = (1 - 17 ^ 0,5) / 4;x = 2;x = - 0,5;x = - 2.