已知x平方减y平方等于xy求y/x

x² - y² = xyx² - xy - y² = 0两边同时除以 x²得：1 - y/x - (y/x)² = 0(y/x)² + y/x - 1 = 0y/x = (-1 + √5)/2 或 y/x = (-1 - √5)/2