Actually I answered my question in post #9

Thanks for your time bro, "talking to you made my crazy mind to work"

]]>That is my solution with the plus/minus sign inside the root taken as +. I am sure taking the minus sign would work as well.

No the minus will not work in this case , as we are finding y^2 and y^2 cant be negative.

But thats not the big problem of mine...my problem is that I can't get to the answer using this equation

And the correct answer for x and y in my book and every where else is

Another thing I want to say,when I write the equation

to this,i.e.. moving the equation from one side to another

I get correct answer.Is here I am doing something wrong?]]>

That is my solution with the plus/minus sign inside the root taken as +. I am sure taking the minus sign would work as well.

What did you say the correct solution should be?

]]>The correct answer will be

And thanks for reply

]]>What do you get as the answer and what does the book get as the answer?

]]>Let z be a complex number

and its square root be c

Then

So

--- Eq1

--- Eq 2

Now every where they (in books,resource,etc) find x using quadratic formula, and after that they substitute x in Eq2 to find y.But what I am doing is I am trying to find y using quadratic formula ,but my signs(+/-) doesnt matches. I think its math and what process we take it doesnt matters ,the answer will be always same. I must be doing something very very silly...which is not coming into my mind right now but it will come later it always happens with me.

]]>Is this what you get?

]]>Actually I am solving for this

]]>

Try to substitute y^2=t when you get the quadratic. The solve for t and y will be just the plus/minus square root of it.

]]>------Eq 2

We can write Eq 2 as

Now we can write Eq 1 as

Is my last equation correct? (I hope so),if yes please solve it using qudratic formula ,as far you can

I have did it but my answer is not matching with correct answer got from other process.The sign is not matching but yes if I write the last equation like this

,my answer matches.

Thanks

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