Question

resolva as aquações do 2 grau por faturação
a)
$x {}^{2} + 2x + 1 = 0$
b)
$3x {}^{2} + 10x + 8 = 0$
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Answer 1

X = - 2 +-V2^2 - 4 • 1 • 1/2 • 1
X = - 2 +-V4 - 4/2

X1 = - 2 + 0/2
X1 = - 1

X2 = - 2 - 0/2
X2 = -1

S = {- 1 , - 1}


B)

X = - 10 +-V10^2 - 4 • 3 • 8/2 • 3
X = - 10 +-V100 - 96/6
X = - 10 +-V4/6

X1 = - 10 - 2/6
X1 = -12/6
X1 = -2

X2 = - 10 + 2/6
X2 = -8/6 : 2
X2 = -4/3

S = { - 2, - 4/3}