Question

A equação X ao quadrado - 5x + 6 = 0

Answer 1

x^2-5x+6=0
delta=b^2-4ac
delta=(-5)^2-4.1.6
delta=25-24
delta=1
x=-b-/+ raiz de delta/2a
x=-(-5)-1/2.1
x=5-1/2
x=4/2
x=2
x=-(-5)+1/2.1
x=5+1/2
x=6/2
x=3

Answer 2

x² - 5x + 6 = 0
a = 1
b = - 5
c = 6

Δ = b² - 4ac
Δ = (-5)² - 4.1.6
Δ = 25 - 24
Δ = 1

x = - b +/- √Δ
          2a
x = - ( - 5) +/- √1
         2.1

x = 5 + 1 = 6/2 = 3
         2
x = 5 - 1 = 4/2 = 2
        2

R.: x = 3 e x = 2