मराठी

`Sqrt3x^2-2sqrt2x-2sqrt3=0` - Mathematics

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प्रश्न

`sqrt3x^2-2sqrt2x-2sqrt3=0` 

 

उत्तर

The given equation is `sqrt3x^2-2sqrt2x-2sqrt3=0`  

Comparing it with `ax^2+bx+c=0`  

`a=sqrt3,b=-2sqrt2 and  c=-2sqrt3` 

∴ Discriminant,` D=b^2-4ac=(-2sqrt2)^2-4xxsqrt3xx(-2sqrt3)=8+24=32>0` 

So, the given equation has real roots. 

Now, `sqrtD=sqrt32=4sqrt2` 

∴ α =`(-b+sqrt(D))/(2a)=(-(-2sqrt2)+4sqrt(2))/(2xxsqrt(3))=(6sqrt2)/(2sqrt3)=sqrt6`  

β =`(-b+sqrt(D))/(2a)=(-(-2sqrt2)+4sqrt(2))/(2xxsqrt(3))=(-2sqrt(2))/(2sqrt(3))=-sqrt6/3` 

Hence, `sqrt6` and `-sqrt(6)/3` are the root of the given equation. 

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Relationship Between Discriminant and Nature of Roots
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 10: Quadratic Equations - Exercises 3

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आर एस अग्रवाल Mathematics [English] Class 10
पाठ 10 Quadratic Equations
Exercises 3 | Q 11
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