Mathematics · May / June 2023 · Paper 11 · Question 4
YMA01
As printed in the paper
The question as text
4. In this question you must show all stages of your working.
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
4(a)[4]
3
5
x
2
+
x
3
5
x
2
+
x
2
=
=
y
1
8
3
x
. .
.
x
3
1
3
1
2
−
−
5
x
3
x
2
3
=
+
2
2
5
1
5
7
=
+
x
3
x
6
2
2
4(b)[3]
d
y
2
1
=
...
+
...
x
3
x
6
d
x
d
y
25
2
7
1
=
x
3
+
x
6
d
x
6
12
Notes:
(a)
M1: Converts the radicals into powers of x, with at least one power correct. E.g.
x
3
→
1
x →
..
.x
8
3
3
M1: Correct subtraction index law seen used at least once. May be implied.
5
2
...
2
...
x
x
x
3
x
q
It is for
→
→
...
x
2
−
p
or
→
→
...
x
q
−
p
8
...
x
p
8
...
x
p
3
x
3
x
Indices do not need to be processed for this mark.
5
5
1
7
A1: One term correct (coefficient and index) or both indices correct. E.g.
2 x or
2 x or
3
6
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