Bomarie02
Bomarie02 Bomarie02
  • 25-10-2019
  • Mathematics
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Solve 3x²-x-2=0. Please show all work.​

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IuliusCaesar
IuliusCaesar IuliusCaesar
  • 25-10-2019

3x²-x-2=0

Δ=1+24=25 (Δ=b²-4ac)

x₁,₂=[tex]\frac{1(+/-)\sqrt{25} }{6}[/tex]

x₁,₂=[tex]\frac{1(+/-)5}{6}[/tex]

x1=[tex]\frac{1+5}{6}[/tex]=6/6=1

x2=[tex]\frac{1-5}{6}[/tex]=[tex]\frac{-2}{3}[/tex]

so

x1=1

x2=[tex]\frac{-2}{3}[/tex]

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