Question

resolucao de equacao do 2 grau
${x}^{2} - 4x + 3 = 0$
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Answer 1

x²-4x+3=0

a=1

b=-4

c=3

∆=b²-4.a.c

∆=(-4)²-4.(1).(3)

∆=16-12

∆=4

x'=[-(-4)+√4]/2.(1)

x'=[4+2]/2

x'=6/2

x'=3

x"=[-(-4)-√4]/2.(1)

x"=[4-2]/2

x"=2/2

x"=1

Logo a solução será : (1 ; 3)