If x = 93, y = 93, z = 94, then the value of x2 - y2 + 10xz + 10yz is
104784
147840
174840
174840
If x, y and z are real numbers such that (x - 3)2 + (y - 4)2 + (z - 5)2 = 0, then (x + y + z) is equal to
-12
0
8
8
If (x - 4) (x2 + 4x + 16) = x3 - p, then p is equal to
27
8
64
64
C.
64
(x - 4) (x2Â + 4x + 16) = x3Â - p
x3 + 4x2 + 16x - 4x2 - 16x - 64 = x3 - p
                     -64 = -p
                     p = 64