Question

3x² + 16x - 4 = 8 na forma do 2° grau

Answer 1

3x²+16x-4=8
3x²+16x-12=0

∆=b²-4ac
∆= 16²-4.3.(-12)
∆=256+144
∆=√400
∆=20

x=-b±√∆\2.a

x'=-16+20/6
x'=2/3

x"=-16-20/6
x"=-36/6
x"=-6