Given k = -3. Find the value of . 

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

If then is equal to

Find the value of. 67²–33².

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?

is equal to