Algebraic Fractions: WJEC GCSE Higher June 2022 Unit 1 Q18

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Higher June 2022 Unit 1 Q18

18. Simplify \(\dfrac{6x - 15}{4x^2 - 25}\) . [4]

Mark scheme

Scheme	Marks	Comments
(Numerator) \(3\,(2x - 5)\)	B1
(Denominator) \((2x + 5)\,(2x - 5)\)	B2	B1 for \((2x \ldots..\ 5)\,(2x \ldots..\ 5)\)
\(\dfrac{3}{2x + 5}\)	B1	FT from one error, provided equivalent difficulty. Mark final answer.