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Solve for X: 3 X 2 − 2 √ 3 X + 2 = 0 - Mathematics

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प्रश्न

Solve for x: `3x^2-2sqrt3x+2=0`

उत्तर

The given quadratic equation is`3x^2-2sqrt3x+2=0`

Comparing with the quadratic equation ax2 + bx + c = 0, we have

`a=3,b=-2sqrt3,c=2`

Discriminant of the given quadratic equation,

`D=b^2-4ac=(2sqrt6)^2-4xx3xx2=24-24=0`

`therefore x= (-(-2sqrt3)+-sqrt3)/(2xx3)`    `[thereforex=(-b+-sqrtD)/(2a)]`

`rArrx=(2sqrt6)/6`

`rArrx=(sqrt6)/3`

Thus, the solution of the given quadratic equation is `x=(sqrt6)/3`

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2011-2012 (March) Delhi Set 3

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