Atb xan 9. Factorise the expression (a + b)
A, (a + b + 2)(a-b+2)
B. (a-b-2)(a + b + 2)
C. (a + b + 2)2
D. (a - b + 2) (a + b-2)
E. (a + b + 2) (a + b -2)
10. Simplify: x2 - 2x
x² - 4
C. X-2 E. x2 - X
2
X +2
x + 2
21²-26
20-
A.
1 / 슬
B.
D.
х
x+2
х
X-2
A.
INSTRUCTION: Answer all questions.
1. Express 0.00562 in standard form
A. 5.62 x 103 8.5.62 x 10-2
C. 0.562 x 102 D. 5.62 x 10-3
E. 0:0562 X 10-3
2. Correct 0.04945 to two significant figures
A. 0.040 C. 0.050 E.0.0495
B. 0.049 D. 0.4950
3. One of the roots of the equation 6x2 = 5-7x is
A -X B. -1/3 C. D. 1/3 E. 2%
A rectangle polygon has each of its exterior
angle as 18º. How many sides has the polygon?
10 B. 11 C. 12 D. 20
20 E.2
E. 24
5. If five times a certain number is subtracted from
twice the square of the number the result is 63.
Find the number.
A. 21 B.9 0.8 0.7 E. 13
6. For what value of y is the expression undefined?
Y + 2
y2-3y - 10
A. y=0 B. y=-2 C. y=3 D. y=5 E. y=10
7. The first and seventh terms of a geometric
progression are 81/2 and 32/, respectively.
Find the common ratio.
A. 3/2 B. 3/4 c. 2²
2/3 D. 12 E. 1/3
11. What is the gradient of the straight line join
(3,0) and (2,-2)?
A.-2 B.
C.22 D.?/3
E.
12. Express the true bearing of 250° as a com
bearing.
A. N20°E
C. N20°W
S20°E
D. S700W
B.
13. If x2 + kx + 16 is a perfect square, then
A. 94
9/ B. %
B. C. 3/2 D. 3/8 E
14. Afiong got 58% in an examination, scort
marks. Her sister scored 330 marks in the
examination. Calculate her sister's per
Score.
A. 60%
C 64% E5%​