Page 259 - MATHEMATICS COURSE FOR SECONDARY SCHOOLS BOOK 2

9. Given that A = find
(a) A + B (c) A – B
(
)(
, 15. (a) Given A = )(
) )
and k = 4, find kA. and k = -7, find kB
14. If K =
(a) K + I
(c) K – I
, evaluate:
evaluate
(a) 3x – 5y
52
-5 7 40
and B = 8 -2
-7 4 5 -2
(b) Given B =( 8 -5 -9 4
10. If P = ( 8 -4 )and Q = ( 12 7 ) , evaluate: 39 -62
(b) -8Q
17. Given x =( -4 1 ) and y = ( 9 -2 ),
(a) P + Q (c) P – Q
11. Given that x = (-15 calculate:
(a) x + y (c) x – y
(-35 ) 12. If A = 18
18. If A =
(a) 3A
and B =
(b) -2B
, determine:
10), find:
12), evaluate:
, calculate:
(a) A + B (c) A – B
13. Given that P = find
(a) P + Q (c) P – Q
00 (b) I + K
(d) I – K
(a) 6P
20. If K = (8
-5) and Q = (-4 (b) -8Q
(b) B + A (d) B – A
16. If P =( 3 7 )and Q = ( 5 0 ), calculate:
(b) Q + P (d) Q – P
9) and y = (10 -3),
(b) y + x (d) y – x
(-15 )
and B = 3 ,determine:
-8 0
3 -7
(b) B + A (d) B – A
74
(b) Q + P (d) Q – P
)( (a) - 23 M (b) 25 N
and I = )()
08 -6-2
(-76 00
63
-6) and L = (-9
( 9 8 ) (-5 2 ) (a) - 23 K (b) 43 L
31 and Q = ,
253
4 -9 (a) 5P
-8 1
evaluate: (a) 7x
19. Given P = (8
(b) -5y
(-9 ) 4
(8 ) -7
21. Given M =(-10 and N = 15
12
) -20
22. Given x =( 4 -5 )and y = ( 7 4 ),
8 10
(a) 5A – 2B (b) 4A + 7B
(b) 5x + 4y
(9 -5) (8 7)
23. Let A = and B = , calculate
-6 3