If (ax3 + 2)2 = a2x6 + x3 + 4, then a =
1
1/2
4
1/4
The value of expression 49x2 - 84 xy + 36 y2, when x = 2 and y = 3 is
1600
160
16
1.6
If x2 + y2 = 29, xy = 2 then the value of x4 + y4 =
831
833
834
835
If 3x + 2y = 12, xy = 6 then the value of 9x2 + 4y2
- 72
72
- 74
- 76
If x = 2/3, y = 3/4, then the value of 81x2 + 16y2 - 72xy is
81
27
9
3
(1 + x) (1 + x2) (1 + x4) (1 + x8) (1 - x) =
1 + x16
1 - x16
x16 - 1
x8 + 1
If 2p + 3q = 14, 2p - 3q = 2 then value of pq is
- 8
1/8
- 1/8
8
(a + b)2 + (a - b)2 =
2 (a2 - b2)
2 (a2 + b2)
2 (2ab)
2 (- 2ab)
If x + y = 9 and xy = 16, find the value of x2 + y2.
113
49
65
97
If 8x = 242 - 162 then the value of x is
42
48
44
40
