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Question
Which of the following are the roots of` 3x^2+2x-1=0?`
-1
Solution
The given equation is `(3x^2+2x-1=0)`
x=(-1)
L.H.S`=x^2+2x-1`
`=3x(-1)^2+2x(-1)-1`
=3-2-1
=0
Thus, (-1) is root of `(3x^2+2x-1=0)`
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Relationship Between Discriminant and Nature of Roots
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