Algebraic Fractions: WJEC GCSE Higher November 2019 Unit 1 Q17

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Higher November 2019 Unit 1 Q17

17. Simplify the following expression. [4]

\[\frac{2x^2 - 13x + 20}{2x - 8}\]

Mark scheme

Scheme	Marks	Comments
(Numerator) \((2x - 5)\,(x - 4)\)	B2	B1 for \((2x \;…..\; 5)\,(x \;…..\; 4)\)
(Denominator) \(2\,(x - 4)\)	B1
\(\dfrac{2x - 5}{2}\) or \(x - \dfrac{5}{2}\) or equivalent.	B1	Mark final answer. F.T. provided no more than 1 previous error and provided simplification required.

Scheme	Marks	Comments
(Numerator) \((x - 5/2)\,(2x - 8)\)	B2	B1 for \((x \;…..\; 5/2)\,(2x \;…..\; 8)\)
\(\dfrac{2x - 5}{2}\) or \(x - \dfrac{5}{2}\) or equivalent.	B2	Mark final answer. F.T. provided at least B1 awarded, no more than 1 previous error and provided simplification required.