isi, cmi practice problem: If ‘$a$’ and ‘$b$’ are distinct positive integers and the quadratic equations $(a - 1)x^2 - (a^2 + 2)x + (a^2 + 2a) = 0$ and $(b - 1)x^2 - (b^2 + 2)x + (b^2 + 2b) = 0$ have a common root...