Question

resolva as equacoes do 2 grau-4xao quadrado+12x+16=0

Answer 1

Explicação passo-a-passo:

-4x²+12x+16=0

a=-4

b=12

c=16

∆=b²-4.a.c

∆=(12)²-4.(-4).(16)

∆=144+256

∆=400

x'=[-(+12)+√400]/2.(-4)

x'=[-12 +20]/-8

x'=8/-8

x'=-1

x"=[-(+12)-√400]/2.(-4)

x"=[-12-20]/-8

x"=-32/-8

x"=4

Resposta :

S={ -1 ; 4 }