grafico
F(x)= 2. |x-3 |- |x+3|
10*10/1
x+5-4ac, para x=2, a=-1 e c=4.
(1/2)^-3
bld enra equation of 2 degree if one of its root is 2
-31=-39-y/8
250 plus 250
|x+y=23 |2x+4y=8
2 $\sqrt{\+}$ 2 . -$\sqrt{\+}$ 3