000001c2083c$1d51df40$b48496c8@rwv">1 + 1 = x(1 + 1)² = x²1 + 2 + 1 = x²(1 + 1) + 2 = x²x + 2 = x²x² - x - 2 = 0delta = b² - 4acdelta = (-1)²-4.1.(-2)delta = 1+8delta = 9x = [1 + √9]:2 ou x = [1-√9]:2x = [1 + 3]:2 ou x = [1-3]:2x = 2 ou x = -1.1+1 = 2ou;1+1 = -1 ??