| Exam Board | OCR |
|---|---|
| Module | C1 (Core Mathematics 1) |
| Marks | 3 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Discriminant and conditions for roots |
| Type | Find discriminant, state roots |
| Difficulty | Easy -1.2 This is a straightforward discriminant calculation (b² - 4ac with simple integer values) followed by direct interpretation of the result. It requires only recall of the discriminant formula and the standard rule about number of roots, with no problem-solving or algebraic manipulation needed. Typical of early C1 material. |
| Spec | 1.02d Quadratic functions: graphs and discriminant conditions |
\begin{enumerate}[label=(\roman*)]
\item Calculate the discriminant of $2x^2 + 8x + 8$. [2]
\item State the number of real roots of the equation $2x^2 + 8x + 8 = 0$. [1]
\end{enumerate}
\hfill \mbox{\textit{OCR C1 Q1 [3]}}