Mathematics · May / June 2023 · Paper 22 · Question 14
0580
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( ) f x x 5 2 = + Find ( ) f x 1 - . ( ) f x 1 = - [2]
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x 2 − oe final answer 5 [2]
M1 for a correct first step y 2 = + − = = + x 5 y 2 or y 2 5 x or 5 x 5
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