Question

$f(x) = {x}^{2} - 3x + 2$
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Answer 1

Resposta:

S = {2;1}

Explicação passo a passo:

x^2 - 3x +2 = 0

a = 1; b = -3; c =2

∆= b^2 - 4ac

∆= (-3)^2 -4.1.2

∆= 9-8

∆=1

x = [ - b +/- √∆]/2a

X = [-(-3) +/- √1]/2.1

X = (3+/-1)/2

X' = (3+1)/2=4/2=2

X" = (3-1)/1= 2/2= 1

R.:

X' = (3+1)/2= 4/2=2

X"= (3-1)/2= 2/2= 1

R.:

S = {2;1}