Ответ:
Объяснение:
[tex]3x^2 - 2x-5 =0[/tex]
[tex]a=3 b=-2 c=-5[/tex]
[tex]D=b^2-4*a*c=(-2)^2-4*3*(-5)= 4 + 60=64=8^2[/tex]
x1=(-b-√D)/2*a=[tex]2-8/2*3= -6/6=-1[/tex]
x2=(-b+√D)/2*a=[tex]2+8/2*3=10/6=5/3= 1 \frac{2}{3}[/tex]
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X1=1 2/3
X2=-1
Verified answer
Ответ:
Объяснение:
[tex]3x^2 - 2x-5 =0[/tex]
[tex]a=3 b=-2 c=-5[/tex]
[tex]D=b^2-4*a*c=(-2)^2-4*3*(-5)= 4 + 60=64=8^2[/tex]
x1=(-b-√D)/2*a=[tex]2-8/2*3= -6/6=-1[/tex]
x2=(-b+√D)/2*a=[tex]2+8/2*3=10/6=5/3= 1 \frac{2}{3}[/tex]