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gabrielabrito19
@gabrielabrito19
October 2020
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qual o valor da função -x²+2x-1
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geiselucid
-x² + 2x - 1 =0
a= - 1 b= 2 c= - 1
Δ= b² -4.a.c
Δ= (2)² -4 .(-1).(-1)
Δ= 4 -4
Δ=0
x=
-b +- √Δ
2 . a
x
=
-2 +- √0
2.(-1)
x
=
-2 +- 0
- 2
x' e x''=
-2
-2
x' e x'' = 1 S= { 1 }
1 votes
Thanks 1
gabrielabrito19
obrigado
geiselucid
Por nada!
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Lista de comentários
a= - 1 b= 2 c= - 1
Δ= b² -4.a.c
Δ= (2)² -4 .(-1).(-1)
Δ= 4 -4
Δ=0
x= -b +- √Δ
2 . a
x = -2 +- √0
2.(-1)
x= -2 +- 0
- 2
x' e x''= -2
-2
x' e x'' = 1 S= { 1 }