The value of p2 + q2 + r2, if P + q + r = 36 and pq + qr + rp = 148 is ___________
1000
40
12000
-1800
[1/x - y/x]2
x2 + 2y/x2 + y2/x2
1/x2 + 2y/x2 + y2/x2
1/x2 - 2y/x2 + y2/x2
None of these
Simplify (2x - 3)3 + (2x + 3)3
16x3 + 108x
8x3 + 102x3
4x3 + 120x3
8x3 - 108x3
If a2 + b2 + c2 = 29, and ab + bc + ca = 28, the value of (a + b + c)2 is?
-85
25
85
95
(x - 4) (x + 3) (x + 10)
x3 + 9x2 - 22x - 120
x3 - 9x2 + 22x + 120
x3 - 9x2 - 22x - 120
If a2 + b2 + c2 = 29 and ab + bc + ac = 28, find the value of (a + b + c)2 ?
100
150
14
[x2 + x/y]2 =
x4 + 2x3/y + x2/y2
x4 - 2x3/y - x2/y2
x4 - 2x3/y + x2/y2
x4 + 2x2/y + x2/y2
If a2 (a + 3b) = 208 and b2 (3a + b) = 135, hat is a + b?
4
7
12
16
If 3a + 2b = 20, ab = 14/9, then the value of 27a3 + 8b3?
-7440
9561
7440
8123
If a + b = 14, ab = 24, find a - b ?
3
8
10
9