Resposta:
Explicação passo a passo:
a) a=1 b=5 c=6 x= -5 + [tex]\sqrt{5^{2} -4.1.6}[/tex] / 2.1 = -5 +[tex]\sqrt{25-24}[/tex] /2 = -5 +[tex]\sqrt{1}[/tex] /2
x= -5+1 /2 = -4/2 = -2
b) a=1 b=-5 c=-6 x=-(-5) + [tex]\sqrt{(-5^{2} )-4.1.(-6)}[/tex] / 2 = 5+[tex]\sqrt{25+24}[/tex]/2= 5+[tex]\sqrt{49}[/tex]/2
x= 5+7/2 = 12/2=6
c) a=2 b=3 c=-2 x= -3+[tex]\sqrt{3^{2}-4.2.(-2) }[/tex]/2.2 = -3+[tex]\sqrt{9+16}[/tex]/4= -3+[tex]\sqrt{25}[/tex]/4
x= -3+5/4 = 2/4 = 1/2
d) a=-1 b=-7 c=-10 x= -(-7)+[tex]\sqrt{(-7^{2} )-4.(-1).(-10)}[/tex]/2.(-1)
x= 7 + [tex]\sqrt{49-40}[/tex]/-2 = 7+[tex]\sqrt{9}[/tex]/-2 = 7+3/-2= 10/-2 = -5
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Resposta:
Explicação passo a passo:
a) a=1 b=5 c=6 x= -5 + [tex]\sqrt{5^{2} -4.1.6}[/tex] / 2.1 = -5 +[tex]\sqrt{25-24}[/tex] /2 = -5 +[tex]\sqrt{1}[/tex] /2
x= -5+1 /2 = -4/2 = -2
b) a=1 b=-5 c=-6 x=-(-5) + [tex]\sqrt{(-5^{2} )-4.1.(-6)}[/tex] / 2 = 5+[tex]\sqrt{25+24}[/tex]/2= 5+[tex]\sqrt{49}[/tex]/2
x= 5+7/2 = 12/2=6
c) a=2 b=3 c=-2 x= -3+[tex]\sqrt{3^{2}-4.2.(-2) }[/tex]/2.2 = -3+[tex]\sqrt{9+16}[/tex]/4= -3+[tex]\sqrt{25}[/tex]/4
x= -3+5/4 = 2/4 = 1/2
d) a=-1 b=-7 c=-10 x= -(-7)+[tex]\sqrt{(-7^{2} )-4.(-1).(-10)}[/tex]/2.(-1)
x= 7 + [tex]\sqrt{49-40}[/tex]/-2 = 7+[tex]\sqrt{9}[/tex]/-2 = 7+3/-2= 10/-2 = -5