Mathematics · May / June 2021 · Paper 22 · Question 24
0580
As printed in the paper
The question as text
Solve. x x 1 1 9 9 1 + + + = x = or x = [5]
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x = 3, x = –3 nfww [5]
M2 for x + 9 + 9(x + 1) = (x + 1)(x + 9) oe or better
or M1 for x + 9 + 9(x + 1) or (x + 1)(x + 9) oe or better
B1 for x 2 + x + 9 x + 9 seen M1 dep for [ ] 2 0 = x − 9 oe simplified or better
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