November 2021 Paper 1 Q7
7 Solve \(\quad 2x^2 + 4 \gt (2x - 3)(x + 1)\) [3 marks]
| Answer | Mark | Comments |
|---|---|---|
| \(2x^2 - x - 3\) or \(2x^2 - 3x + 2x - 3\) | M1 | |
| \(4 \gt -x - 3\) | M1dep | oe eg \(7 \gt -x\) |
| \(x \gt -7\) or \(-7 \lt x\) | A1 |
Additional guidance
| \(=\) used instead of \(\gt\) throughout and not recovered on answer line | M2A0 |