Intermediate November 2023 Unit 1 Q17
17. Factorise \(x^2 - 8x - 20\), and hence solve \(x^2 - 8x - 20 = 0\). [3]
| Scheme | Marks | Comments | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| \((x - 10)(x + 2)\) | B2 | B1 for one of the following:
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| (\(x\) =) 10 AND (\(x\) =) −2 | B1 | Strict FT from their pair of brackets. If no factorising shown, allow the following.
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