(i) Find the values of \(n\) for the \(nx (x – 2) + 16= 0\) quadratic equation, so that they have two equal roots.
\(n=\)
(ii) For what values of \(n\), the roots of the equation \(x^2 + 4x + n = 0\) are real?
The roots of the equation \(x^2 + 4x + n = 0\) are real if
Answer variants:
\(n \geq 4\)
16
−16
\(n=4\)
\(n\leq 4\)