Evaluate `39^3 -21^3`

Evaluate 1^3+2^3+3^3+...+21^3

Evaluate =|23-2123-21-3|by expanding it along the second row.

Evaluate: (a) (8)^(3) (b) (15)^(3) (c) (21)^(3) (d) (60)^(3)

Evaluate |[1,2,3],[-2,3,2],[3,4,-4]|xx|[-2,1,3],[3,-2,1],[2,1,-2]| . Using the concept of multiplication of determinants.

If a-b=4 and ab=21, find the value of a^(3)-b^(3)

Find the value of x^3-y^3 if x-y=4 and xy=21

If x-y=4 and xy=21, find the value of x^(3)-y^(3)

Find the value of 1-((1(2)/(3))/(3(1)/(2))+(1(1)/(6))/(3(1)/(2)))* a) (3)/(20) (b) (4)/(21)(c)(8)/(21) (d) (13)/(21)

If a+b=10 and ab=21, find the value of a^(3)+b^(3)