Mathematics · May / June 2026 · Paper 42 · Question 17
0580
As printed in the paper
Show the answer and mark scheme
17(a)[1]
8 [1]
17(b)[2]
− x 7 oe final answer 2 [2]
− x , − For 2 marks accept e.g. 7 7 x − − 2 2 If answer x – 7/2 then check working and if fraction shown correctly allow 2 marks. y 7
M1 for y – 7 = 2x or = + x or x = 7 + 2y or 2 2 better
17(c)[2]
16 [2]
64 64 x oe 64 ‣ 2 ‣ 2 5 , 24
M1 for 64 2 For M1 e.g. 64 2 , 2 2 or [gg(5) =] g(2) oe
17(d)[2]
1 4 or 0.25 [2]
M1 for g(8) oe e.g. 64 , 2–2 8 2
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