[Company Name] - Crystal Math
GAUTENG DEPARTMENT OF EDUCATION PROVINCIAL EXAMINATION
JUNE 2016
GRADE 11 MATHEMATICS P1
MEMORANDUM
11 pages
MATHEMATICS MEMORANDUM (Paper 1)
Grade 11
GAUTENG DEPARTMENT OF EDUCATION- PROVINCIAL EXAMINATION
MATHEMATICS (Paper 1)
MEMORANDUM
QUESTION 1
1.1 1.2 1.2.1
1.2.2
OR x 4
3
= x+4
(
2 ? x = + 8x +16 x2 + 8x +16 + x ? 2 = 0
x2 + 9x +14 = 0 (x + 2)(x + 7) =0 x = ?2 OR x = ?7
NA 2x( x - 3) = 1 2x2 - 6x ? 1 =0 a = 2; b = -6; c = -1
x =
x = x = x = 3,2 OR x = -0,2
(2) Squaring
both sides Standard form Factors Answers x= ?2 only
(5) Standard form Substitution Answer answer
(4)
2
MATHEMATICS MEMORANDUM (Paper 1)
Grade 11
1.2.3
> 0
> 0
>0
-3 < < -1 or > 1 OR
(-3 ; -1) (1 ; ) 1.3
2
2 2 =
x 1 x3 Critical values in
context of an inequality correct notation
Only focus on numerator
(4)
Divide by 2 73
16
Finding square root ( )
x = 2,89 x = -1,39
x =
x =
OR x =
x = 2,89 OR x = -1,39
Use of quadratic formula max 2/5 for the two correct answers.
(5) [20]
3
QUESTION 2
2.1
= = = = = 16 OR
2.2 2.2.1
5 10 5 2 52 5 5 10 5 20
52 5 25 10 5
52 5
5 5 2 5 5 2 55 5
OR
MATHEMATICS MEMORANDUM (Paper 1)
Grade 11
Expansion
333 4.9 3x 13
Answer
If k-method is used exactly the same mark allocation
(4)
5 10 5 2 52 5
simplification
5 5 2 5 5 2 55
answer
+
=
+
=5 - 2
=5 - 2 =5
4
Rationalizing the denominator Rationalizing the denominator Simplification Answer
(4)
MATHEMATICS MEMORANDUM (Paper 1)
Grade 11
2.2.2 (
= (
=(
+
=(7 -
=(7
=343
OR
2.2.2 ( cont.
=(
+ )2
=
+ )2
= (7
= (49)(7) = 343 2.3 from: 2x . 4y = 1 2x . 22 y = 20 x + 2y = 0 x = ?2y.................
subst into (4y)x =
(4y)?2x =
24y2 24
?4y2 = ?4
y = 1
subst y = 1 into
y= 1
x = ?2
y = ?1
x =2
OR
72008 73 71 (7 Answer
2009
72 (7?1) (7 Answer
(4) 22 y x + 2y = 0
OR x= ?2y substitution same bases on either side y = 1 x = 2
(6)
5
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