Respostas

2013-09-15T16:08:17-03:00
X*2 - 169 =0
x*2=169
x= raiz de 169
x=13
1 5 1
2013-09-15T16:16:56-03:00
A=1
b=0
c=169
Δ = b² - 4*a*c
Δ = 0² - 4 .1 .169
Δ = 169
X = -b ± √169/2.a
x= -0 +26/2 =
x= 13