(2x - 3)^2 = (2x - 5)^2;
откроем скобки:
4x^2 - 12x + 9 = 4x^2 - 20x + 25;
4x^2 - 4x^2 - 12x + 20x = 25 - 9;
8x = 16;
x = 16 : 8;
x = 2.
(2x - 3)^2 = (2x - 5)^2;
откроем скобки:
4x^2 - 12x + 9 = 4x^2 - 20x + 25;
4x^2 - 4x^2 - 12x + 20x = 25 - 9;
8x = 16;
x = 16 : 8;
x = 2.