Solving a quadratic equation as a sum and product of its roots

[PeroK]

The approach below is from a colleague, let me know of any other approach to this part of the question.

View attachment 265589

Your solution is a lot neater than that.

 

[chwala]

Thanks Perok, it took me a while to think on that...all the passion for this great subject...its a pleasure. I will be posting and sharing more questions...bingo!