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Kleyci111
@Kleyci111
December 2019
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Resolva as seguintes equações do 2 grau sendo U=R 2x+5x-3=0
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danmerces3ou6gex
usando a formula do delta
delta = B elevado ao quadrado -4 AC
2x+5x-3=0
5^2-4*2*-3=0
25-4*-6=0
25+24=0
delta =49
usando a formula de X
x = -b +ou- raiz de delta /2a
x = -5 +ou- raiz de 49 / 2a
X1 = -5+7 / 2*2
X1= 2/4
X1 = 0,5
X2 = -5-7 / 2*2
X2 = -15 / 4
X2= -3,75
1 votes
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Lista de comentários
delta = B elevado ao quadrado -4 AC
2x+5x-3=0
5^2-4*2*-3=0
25-4*-6=0
25+24=0
delta =49
usando a formula de X
x = -b +ou- raiz de delta /2a
x = -5 +ou- raiz de 49 / 2a
X1 = -5+7 / 2*2
X1= 2/4
X1 = 0,5
X2 = -5-7 / 2*2
X2 = -15 / 4
X2= -3,75