First, we will calculate Discriminant:

D=b^2-4ac

Here a=1,b=-3,c=2

therefore D=(-3)^2-4*1*2

              D=9-8

              D=1

Since Discriminant is greater than zero it means two real and discrete roots.

Now the roots are    3+1/2 and 3-1/2

That is the roots of the given equation are 2 and 1

That is equation has two real

Hello kislay

Its your plus point then you are good in physics means you are good in calculations and concepts

To score good in mathematics you need to do more and more practice with time management.

First have notes of all the formulas amd revise them daily so at the

Choose first 4 digits in this case. Which is 1.721

Now convert this into suitable fraction. Which is 1721/1000.

Now by cancellation method through common factors keep reducing to last possible number to get the fraction . 

If you find Mathematics difficult then, Please don't assume that You can not learn it and also remember that you can learn everything. You need to be patience  I find myself to be perfect to answer this query because when I was in class 9th I was very weak student

Yes You can Use RD Sharma, But not for all Topics Such as Calculus is Not as per the level of JEE ADvance, some topics are good in RD Sharma such as sequence and series and most of the algebra but for calculus and coordinate geometry You should go with

Dear Ankit Sinha 

Since you are not passed there is no use of it.If you are applied you will get your updated marksheet.but you have study more than you have studied and try to clear you exam 

Best of luck 

You should First complete Your Graduation and then Go for Masters with Mathematics, There you will get a little bit of teaching experience. If You see Private college which accepts an application from Masters then You can apply there, otherwise Go for PhD once You complete it, Apply for different