Question

2x +6x +4=0 meajuuudem

Answer 1

2x+6x = 8x

 8x+4=0

8x=-4

x=-4/8
x=-1/2 ou -0,5

Answer 2

b²-4ac
36-4*2*4
36-32
4
-b+-Raiz de delta sobre 2a, fica:
X1 (-6+2)/2=-2
X2 (-6-2)/2= - 4