(x-7)^2 = (9-x)^2Expanding both sides:x^2 - 14x + 49 = 81 - 18x + x^2Combining like terms:-14x + 49 = -18x + 81Adding 18x to both sides:4x + 49 = 81Subtracting 49 from both sides:4x = 32Dividing by 4:x = 8
Ответ: x = 8
(x-7)^2 = (9-x)^2
Expanding both sides:
x^2 - 14x + 49 = 81 - 18x + x^2
Combining like terms:
-14x + 49 = -18x + 81
Adding 18x to both sides:
4x + 49 = 81
Subtracting 49 from both sides:
4x = 32
Dividing by 4:
x = 8
Ответ: x = 8