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CleidianeH
@CleidianeH
December 2019
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X^2+2x=35,00 me ajudem ^^?
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marcosdihego2
X1= -7 x2=5 agora nao sei a pergunta para formula a resposta.
0 votes
Thanks 1
jjzejunio
X² + 2x = 35
x² + 2x - 35 = 0
a= 1
b= 2
c= -35
delta = b² - 4.a.c
delta = 2² - 4.1.(-35)
delta = 4 + 140
delta = 144
x = -b ± √delta/2.a
x = -2 ± √144/2.1
x = -2 ± 12/2
x¹ = -2 + 12/2 = 10/2 = 5
x² = -2 - 12/2 = -14/2 = -7
s={ 5, -7 }
☆Espero ter ajudado!
1 votes
Thanks 1
CleidianeH
obg <3
jjzejunio
De nada
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Lista de comentários
x² + 2x - 35 = 0
a= 1
b= 2
c= -35
delta = b² - 4.a.c
delta = 2² - 4.1.(-35)
delta = 4 + 140
delta = 144
x = -b ± √delta/2.a
x = -2 ± √144/2.1
x = -2 ± 12/2
x¹ = -2 + 12/2 = 10/2 = 5
x² = -2 - 12/2 = -14/2 = -7
s={ 5, -7 }
☆Espero ter ajudado!