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severo345
@severo345
October 2020
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Como faço esta equação de 2 grau " 2x²+5x"?
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geiselucid
2x² +5x
a= 2 b= 5 c=0
Δ=b² -4.a.c
Δ=(5)² -4.2.0
Δ=25 -0
Δ=25
x=
-b+-√Δ
2.a
x=
- 5+-√25
2.2
x=
-5+-5
4
x'=
-5-5
=
-10
=
- 5
4 4 2
x"=
-5 +5
=
0
= 0
4 4 S= { -5/2 ; 0 }
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Lista de comentários
a= 2 b= 5 c=0
Δ=b² -4.a.c
Δ=(5)² -4.2.0
Δ=25 -0
Δ=25
x=-b+-√Δ
2.a
x=- 5+-√25
2.2
x= -5+-5
4
x'= -5-5 = -10 = - 5
4 4 2
x"= -5 +5 = 0 = 0
4 4 S= { -5/2 ; 0 }