If x = y = 333 and z = 334, then the value of x³ + y³ + z³ – 3xyz is

If x²+4y²=17 and xy=2, where x>0,y>0, then what is the value of x³+8y³?

Simplify the following expression.

If 4x² + y² = 40 and xy = 6, then find the value of 2x + y.

If x+y+z=10, x²+y²+z²=30, then the value of x³+y³+z³-3xyz is _________.

P = 12xy – 10y² – 18x²,

Q = 14x² + 12y² + 9xy, and

R = 5y² – x² + xy

then (P + Q) – R =

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

if x+y =3 and then the value of (x²+y²) is :