Find the value of x + 1/x if x = 2.
4
5
5/2
3/2
Factorize 10s + 15t + 20u.
2s + 3t + 4u
5(2s + 3t + 4u)
2(2s + 3t + 4u)
5(5u + 10t + 4u)
Simplify 63 × 62 × 67.
18
1812
69
612
8 p8 ÷ 4 p4 =
2p
2 p4
4 p2
4 p4
77 ÷ 7 =
78
76
77
7
Simplify 4(y + 3) - 3(2y - 1).
- 2y + 15
2y + 15
2y - 15
- 2y - 15
(83)3 ÷ 84 =
85
86
84
8-1
(98)3 =
93
98
924
911
A is directly proportional to r2 where r = 3 , A = 36, find the value of A when r = 10.
400
350
300
200
Write 10000 as powers of 10.
103
4 × 101
104
105
