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4 years ago

Solve 3x²-x-2=0. Please show all work.

Mathematics

1 answer:

lorasvet [3.4K]4 years ago

3 0

3x²-x-2=0

Δ=1+24=25 (Δ=b²-4ac)

x₁,₂= $\frac{1(+/-)\sqrt{25} }{6}$

x₁,₂= $\frac{1(+/-)5}{6}$

x1= $\frac{1+5}{6}$ =6/6=1

x2= $\frac{1-5}{6}$ = $\frac{-2}{3}$

x1=1

x2= $\frac{-2}{3}$

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Sample size, n = 15

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Sample standard deviation, s = 2.3

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3 years ago

Solve 3x²-x-2=0. Please show all work.​

Solve 3x²-x-2=0. Please show all work.