Mathematics · May / June 2025 · Paper 41 · Question 18
0580
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The question as text
x x 2 12 2 2 Ì Å can be written in the form ( ) Â x c 2 Ì Å . Find the values of º, and c. º ¤ , ¤ , c ¤ [3]
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a = 2 b = 3 c = 20 [3]
B2 for any two correct For c, FT 2 + their a × their (b)2 =
or B1 for b 3 nfww OR
B2 for ( ) 2 2 x + 3 − 20
or M1 for (x + 3)2 seen 2 + + 2 − or for ax 2 abx ab c or for = and one of 2 ab = and a 2 12 2 − = − ab c 2
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