-3b2 (4a - b) =
-12ab2+ 3b3
12ab2 - 3b3
-12ab2 - 3b3
None of these
8 p8 ÷ 4 p4 =
2p
2 p4
4 p2
4 p4
7(3n - 4m) + 8n =
21n - 28m
29n - 28m
13n - 28m
3a (a - 2b + 4c) =
4c2a2 - 8c2b2 - 4c2d2
3a2 - 6ab - 12ac
3a2 + 6ab - 12ac
3a2 - 6ab + 12ac
x/7 (21x - 28y) - x/2 (4x - 6y) =
x2 - xy
x2 + xy
-x2 - xy
-x2 + xy
77 ÷ 7 =
78
76
77
7
(98)3 =
93
98
924
911
a(2d + 4e) - 3e (a - c) =
2ad - ae + 3ec
2ad + ae - 3ec
2ad + ae + 3ec
4(x + 4) =
4x + 4
4x + 8
4x + 16
x + 16
Find the value of x + 1/x if x = 2.
4
5
5/2
3/2
