Question

Resolva as equações do 2° grau em R:

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Answer 1

X2+5x+6=0
D=52-4.1.6
D=25-24
D=1
X=_5+_v1/2
X’=5+1/2
X’=3
X’’=5-1/2
X’’=2

b)x2-7x+12=0
D=_72-4.1.12
D=49-48
D=1
X=7+_v1/2.1
X’=7+1/2
X’=4
X’’=7-1/2
X’’=3

c)x2+5x+4=0
D=52-4.1.4
D=25-16
D=9
X=_5+_v9/2.1
X’=5+3/2
X’=4
X’’=5-3/2
X’’=1