Решите уравнения:
(x+4)² - x² = ² + 1;
x (x² - 2) = x³ - 8;
(x + 5)(x - 4) - x² + 18 = 0;
(x + 7)(x - 7) - (x - 3)² = 53;
x³ - 49x = 0;
(x - 2)³ + (x + 2)³ = 2x (x² -1) + 3;
7x² = (2x + 1)² + 3x² - 5;
(x + 3)(x - 2) - (x - 3)(x + 2) - 5 = 6x - 7;
x³ + 2x² - 9x - 18 = 0;
x³ - 2x² - 9x - 18 = 0;
7 - (2x - 2) × (4x + 1) = 2x × (5 - 4x);
(5 - x)² - (3x - 2) × (2x + 1) = x × (2 - 5x);
2x + 3|x| - 2 = 4 + 2 (2x - 1) - x;
2|x - 1| - 3x - 5 = 2 - 2(3x -1) - 2x;
5 - 4x + 3|x + 5| = 3 - (2x - 3) - 3x.