Respostas

2013-12-13T11:26:12-02:00
X² - 12x =0  separamos a,b,c

temos, a=1 b=2 c=0

usamos a formula baskara Δ=b²-4.a.c  assim teremos,
Δ=b²-4.a.c
Δ=(-12)²-4.1.0
Δ=144-0
Δ= 144

x=-b+-√Δ/2.a
x=-(-12)+-√144/2.1
x=12+-12/2

X' = 12+12/2= 24/2 = 12
X''=12-12/2 = 0/2 = 0

X'= 12   X''=0
2 3 2
2013-12-13T14:00:38-02:00
X ² - 12 x = 0
x ( x - 12 ) = 0
x = 0
 x - 12 = 0
 x = 12
Solução : 0 e 12
1 5 1