If x – y + z = 15, xyz = -216 and xz – xy – yz = 18, then the value of

Find the value of. 67²–33².

If a+b=2c, find

If (a+b)=16 and a³+b³=1456, then what is the value of ab?

The ratio of two unequal sides of a rectangle is 1 : 2. If its perimeter is 24 cm, then the length of diagonal in cm is:

If x²+y²-4x-4y+8=0, then the value of x-y is: 

If x + y + z=1, xy+yz+zx=-26 and x³ + y³+z³=151, then what will be the value of xyz?

If ,then what is the value of ?