[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[obm-l] alguém explica isso?



1 + 1 = x
(1 + 1)² = x²
1 + 2 + 1 = x²
(1 + 1) + 2 = x²
x + 2 = x²
x² - x - 2 = 0
 
delta = b² - 4ac
delta = (-1)²-4.1.(-2)
delta = 1+8
delta = 9
x = [1 +√9]:2 ou x = [1-√9]:2
x = [1 + 3]:2 ou x = [1-3]:2
x = 2 ou x = -1.
1+1 = 2 ou;
1+1 = -1 ??