If   $$x+{1\over x}=2 $$ then the value of    $$x^{12}-{1\over x^{12}} $$ is

Directions: In each of these questions, two equations (i) and (ii) are given, you have to solve both the equations and give answer accordingly.

(i) 2x³ = $$ \sqrt {256}$$
 (ii) 2y² – 9y + 10 = 0

If (10 a³+4b³):(11a³-15b³)=7:5, then (3a+5b):(9a-2b)=?

If x + y + 3 = 0 , then find the value of x³+y³-9xy+9.

If x = 2 - 2^1/3 + 2^2/3, then the value of x³– 6x² + 18x + 18 is

If 9x² + y² = 37 and xy = 2, x, y>0, then the value of (27x³+ y³) is:

If x = 332, y = 333, z = 335, then the value of x³ + y³ + z³ – 3xyz is

Directions: In each of these questions, two equations (i) and (ii) are given, you have to solve both the equations and give answer accordingly.

(i) 2x² + 9x + 9 = 0
 (ii) 15y² + 16y + 4 = 0