Question

me ajudem prfv!!!!
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Answer 1

Resposta:

Explicação passo a passo:

d

a=-1

b=1

c=12

x=-1+-V1²-4.1.12/2.1

x=-1+-V1+48/2

x=-1+-V49/2

x=-1+-7/2

x'=-1-7/2=-8/2=-4

x''=-1+7/2=6/2=3

S={-4,3}

e

a=-1

b=6

c=-5

x=-6+-V6²-4.-1.-5/2.-1

x=-6+-V36-20/-2

x=-6+-V16/-2

x=-6+-4/-2

x'=-6-4/-2=-10/-2=+5

x''=-6+4/-2=-2/-2=+1

S={1,5}

f

a=6

b=1

c=-1

x=-1+-V1²-4.6.-1/2.6

x=-1+-V1+24/12

x=-1+-V25/12

x=-1+-5/12

x'=-1+5/12=4/12=1/3

x''=-1-5/12=-6/12=-1/2

S={-1/2,1/3}