Respostas

2013-12-08T21:37:22-02:00
Δ=B²-4AC
Δ=1-4*1*(-4)
Δ=17
X=[-(-1)+√17]/2
X=1+4,1/2
X=5,1/2
X'=2,55
X''=1-4,1/2
X=-3,1/2
X''=-1,55
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Δ=1-4*1*-5
Δ=21
X=-1-√21/2
X=-5,6/2
X'=-2,8
X=-1+4,6/2
X=3,6/2
X''=1,8

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