Mathematics · Oct / Nov 2020 · Paper 21 · Question 22
0580
As printed in the paper
The question as text
Simplify. x x x 2 50 5 2 2 - - [4] Question 23 is printed on the next page.
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
x x or 2 1 0 final answer 2 ( x + 5 ) x + [4]
B1 for x(x – 5)
B2 for 2(x – 5)(x + 5) or (x – 5)(2x + 10) or (2x – 10)(x + 5)
or B1 for 2(x2 – 25) or (x – 5)(x + 5)
Make a free account to save your answers and see your weak topics and ask the AI why a wrong answer is wrong.