Question

c) (x² – 5x+6)=2
respodam ​

Answer 1

Resposta:

S={1,4}

Explicação passo-a-passo:

x²-5x +6 -2=0

x² -5x +4=0

∆=(-5)² -4.1.4

∆=25 -16

∆= 9

x= -(-5)±√9/2.1

x= 5±3/2

x1= 5+3/2

x1=8/2

x1=4

x2= 5-3/2

x2= 2/2

x2=1