Question

${x}^{2} - 5x + 6 = 0$
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Answer 1

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

S = {2 ; 3}