EduGoog

If x + y + z = 9  &  xy + yz + zx = 23,
then the value of (x3 + y3 + z3 - 3xyz) is :

Option :
A. 108
B. 207
C. 669
D. 729

If 5x/125 = 1, the x is equal to :

Option :
A. 5
B. 2
C. 0
D. 3

If 3- 3x-1 = 18, then the value of xx is :

Option :
A. 3
B. 8
C. 27
D. 216

If 2- 2x-1 = 16, then the value of x2 is :

Option :
A. 4
B. 9
C. 16
D. 25

If (x - 2) is a factor of (x2 + 3qx - 2q), then the value of q is :

Option :
A. 2
B. -2
C. 1
D. -1