If  is

If ab = 21 and  then value of  is

• 115

• 121

• 125

• 125

Given,   and   then  is

• 9

• 4

• 16

• 16

If x + y + z = 9 then value of  is

• 6

• 9

• 0

• 0

If , then the value of  is

• 1

• -1

• 0

• 0

Among below expressions which one can be expressed as the difference of two cubic expressions?

If  and V₁ and V₂ are the minimum and the maximum values of  then  is equal to

• -36

• 36

• 72

• 72

If  then  is

• 140

• 142

• 144

• 144

39.

If a = 2,  b = -3 then the value of  is

• 1562

• 1616

• 1676

• 1676

If  then value of  is (a is a positive number):

• 1

• 2

• 3

• 3