Mathematics · May / June 2021 · Paper 22 · Question 22
0580
As printed in the paper
The question as text
Simplify. x x x x 3 12 2 5 12 2 2 - - - [4]
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Show the answer and mark scheme
2 3 x + final answer 3 x [4]
B2 for ( x − 4 )( 2 x + 3 )
or B1 for (x + a) (2x + b) where ab = –12 or 2a + b = – 5 or ( ) ( ) x 2 x + 3 − 4 2 x + 3 ( ) ( ) or 2 x x − 4 + 3 x − 4
B1 for 3 ( x x − 4 )
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