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Academics – Mathematics : 2016/DEC/02

Question

Q2. (a) Solve the following system of equations for a, b, and c: (10)

4a + 6b – 5c = –3

5a + 2b + 3c = 13

15a + 4b – 8c = –16

(b) Factorise EACH of the following as fully as possible:

(i) 12r² + r – 6; (3)

(ii) 3x³ – 12 xy² (3)

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