Practicing Success
If \(a\) is an integer lying in \([-5,30]\), then the probability that the graph \(y=x^2+2(a+4)x-5a+64\) is strictly above the \(x-\) axis is |
\(\frac{2}{9}\) \(\frac{3}{9}\) \(\frac{9}{2}\) \(\frac{1}{2}\) |
\(\frac{2}{9}\) |
Favourable cases \(=8\), Total cases \(=36\) |