EduGoog

If (x + 1/x) = 2, then (x31/x3) is equal to :

Option :
A. 64
B. 14
C. 8
D. 2

If (x2 + 1/x2) = 102, then (x - 1/x) is :

Option :
A. 8
B. 10
C. 12
D. 13

If 2x + 3y = 5 and x = - 2, then the value of y is:

Option :
A. 1/3
B. 1
C. 3
D. 9

If a + b + c = 0, then (a3 + b3 + c3) is equal to :

Option :
A. 0
B. abc
C. 3 abc
D. (ab + bc + ca)

If a + b + c = 0, then the value of (a2/bc + b2/ca + c2/ab) is :

Option :
A. 1
B. 0
C. -1
D. 3