Respostas

2014-04-23T00:12:08-03:00
25x² + 10x + 1 = 0

a = 25 
b = 10
c = 1

Δ = b² - 4ac
Δ = (10)² - 4(25)(1)
Δ = 100 - 100
Δ = 0

x = -b +- √Δ / 2a
x = -(10) +- √0 / 2(25)
x = -10 +- 0 /  50

x = -10/50
x = -1/5