4400 Higher November 2004 Paper 3 Q15
15 Solve the equation \(3x^2 + 2x - 6 = 0\)
Give your answers correct to 3 significant figures.
(3)
| Scheme | Marks |
|---|---|
| \(\dfrac{-2 \pm \sqrt{4 - (-72)}}{6}\) oe | M1 |
| 1.12, −1.79 or better | A1, A1 |
| (3) | |
| (3 marks) |
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