Respostas

2014-01-09T14:42:40-02:00
x²+11=12x
x²-12x+11=0
Δ=144-44
Δ= 100

x= -b+/-√Δ/2a
x= 12+/-√100/2·1
x= 12+/- 10/2

x'= 11
x''= 1

M= 11+1/2
M= 12/2
M=6

Alternativa B- 6
2 5 2