GRADE 10 TEST 1 2018 MEMORANDUM STATEMENT/ANSWERS DESCRIPTION OF MARKS and Any two correct numbers (2) ; 0,23…. or Any two correct numbers (2) 1.2.1 -3 (2) 1.2.2. 3 4 3 4 correct value (2) 2 1.3.1. a – a(c - 5) - 5c removing brackets/multiplying 2 a – ac - 5a - 5c factorizing/grouping a(a - c) + 5 ( a - c) ( a + 5 )( a- c) answer (3) 3 3 1.3.2. a - 27 b for each factor (2) 2 + 3ab ( a – 3b) (a + 9 b 2 ) 2 1.3.3. 9 a + 6ab + b 2 factors (2) (3a+ b) ( 3a + b ) 1.4.1. (5a - 2b) ( -2a - 3b ) removing brackets/multiplying 2 2 - 10a - 15 a b + 4ab + 6 b answer (2) - 2 – 2 10 a 11ab + 6 b 1.4.2 (5a2 - 2b) ( 4 + 3b - 2 2 – + 10 a 20 a 35 a b 4a2b-8ab2 14b3 Simplification (3) 2 1.4.3. (2p2 + 3q2)(5p -6pq + 2q ) - - 10p3 12 p3q + 4 p2q2+ 15pq2 18 pq2 + 6q4 Expansion - - + 10p3 12 p3q + 4 p2q2 3pq2 6q4 Answer (3)
GRADE 10 TEST 1 2018 MEMORANDUM STATEMENT/ANSWERS DESCRIPTION OF MARKS and Any two correct numbers (2) ; 0,23…. or Any two correct numbers (2) 1.2.1 -3 1.2.2. 3 4 (2) 3 4 correct value (2) 1.3.1. a 2 – a(c - 5) - 5c a 2 – ac - 5a - 5c a(a - c) + 5 ( a - c) ( a + 5 )( a- c) 1.3.2. a 3 - 27 b 3 ( a – 3b) (a 2 + 3ab + 9 b 2 ) 1.3.3. 9 a 2 + 6ab + b 2 (3a+ b) ( 3a + b ) removing brackets/multiplying factorizing/grouping answer (3) for each factor (2) factors (2) 1.4.1. (5a - 2b) ( -2a - 3b ) - 10a 2 - 15 a b + 4ab + 6 b 2 - 10 a 2 – 11ab + 6 b 2 1.4.2 (5a2 - 2b) ( 10 a 4 + 20 a 3b - 35 a 2 b 2 – 4a2b-8ab2 + 14b3 1.4.3. (2p2 + 3q2)(5p -6pq + 2q 2 ) 10p3 - 12 p3q + 4 p2q2+ 15pq2 - 18 pq2 + 6q4 10p3 - 12 p3q + 4 p2q2 - 3pq2 + 6q4 removing brackets/multiplying answer (2) Simplification (3) Expansion Answer (3)