Question

x elevado a 2-5x+6=0 cálculo completo ​

Answer 1

Resposta:

x =2, x =3

1 2

Explicação passo-a-passo:

x^2-5x+6=0

x^2-5x+6=0

x^2 -2x-3x+6=0

x×(x-2)-3x+6=0

x^2 -2x-3x+6=0

x×(x-2)-3(x-2)=0

(x-2)×(x-3)=0

x-2=0

x-3=0

x-2=0

x-2+2=0+2

x=0+2

x-2+2=0+2

x=2

x-2=0

x-3=0

x=2

x-3=0

x-3+3=0+3

x=0+3

x-3+3=0+3

x=3

x-2=0

x-3=0

x=2

x=3

x =2, x =3

1 2

Resposta

x =2, x =3

1 2

Answer 2

Explicação passo-a-passo:

x²-5x+6= 0

a=1; b= -5; c = 6

∆= b²-4ac

∆= (-5)²-4.1.6

∆= 25-24

∆= 1

x = (-b+/- √∆)/2a

x = [-(-5) +/- √1]/2.1

x = (5+/- 1)/2

x ' = (5+1)/2= 6/2= 3

x " = (5-1)/2= 4/2= 2

R.:

s={2,3}