Respostas

2014-07-23T04:00:54-03:00
4x² - 12x = 0

definir quem é A, B e C .

A= 4 
B= 12
C= 0
 
Δ=B²-4.a.c
Δ=12²-4.4.0
Δ=144 

-B+-√Δ  / 2.a

-12+-12 / 8 

x'= -12+12/8 = 0

x'' = -12-12/8=24/8 = 3

C.S= (0,3)


1 5 1