Can you solve it?

Описание: There's a nice technique to solve this question.

Problem 1
https://www.facebook.com/photo.php?fb...
  / does_anyone_know_how_to_solve_this_polynomial  

Problem 2 (2019 NDA paper 2 mathematics q18)
https://www.vedantu.com/exams/nda-2-m...
https://askfilo.com/user-question-ans...

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