Respostas

2014-06-04T22:38:11-03:00
X²+25=10x
x²-10x+25=0

Δ = b2 - 4.a.c 
Δ = -102 - 4 . 1 . 25 
Δ = 100 - 4. 1 . 25 
Δ = 0

Usando Báscara:
 x = (-b +- √Δ)/2a
x = (-(-10) + √0)/2.1
x = 10 / 2
x = 5
1 5 1