Respostas

2013-09-25T13:40:45-03:00
X²-5x+6=0

a= 1
b= -5
c= 6

Δ= b²-4ac
Δ= (-5)²-4.1.6
Δ= 25-24
Δ= 1

x= -b+-√Δ/2a
x= -(-5)+-√1/2.1

x=5+1/2= x=3
x=5-1/2= x=2


RESPOSTAS 3 e 2