The value of expression 49x2 - 84 xy + 36 y2, when x = 2 and y = 3 is
1600
160
16
1.6
If a + b = 8 and ab = 12 then a2 + b2 is
42
44
40
48
If 8x = 242 - 162 then the value of x is
If (ax3 + 2)2 = a2x6 + x3 + 4, then a =
1
1/2
4
1/4
If x2 + 1/x2 = 27, find the value of x - 1/x
5
29
√29
57
If 3x + 2y = 12, xy = 6 then the value of 9x2 + 4y2
- 72
72
- 74
- 76
If 2p + 3q = 14, 2p - 3q = 2 then value of pq is
- 8
1/8
- 1/8
8
If x2 + y2 = 29, xy = 2 then the value of x4 + y4 =
831
833
834
835
If x + y = 9 and xy = 16, find the value of x2 + y2.
113
49
65
97
Find the product (7 p - 8 q) (7 p - 8 q)
49 p2 - 30 pq + 64 q2
49 p2 - 112 pq + 64 q2
49 p2 - 112 pq - 64 q2
49 p2 + 30 pq + 64 q2
