Q18 of 32 Page 2

If , find the value of .

Concept Used:


(a – b)3 = a3 – b3 – 3ab(a – b)


Explanation:


Given:


Taking cube on both sides, we get,






Hence, .


More from this chapter

All 32 →
16

Find the remainder when x3 – ax2 + 6x – a is divided by x – a.

 17

Factorize: 27x3 + y3 + z3 – 9xyz

 19

Evaluate (99)3.

 20

Without actually calculating the cubes, find the value of

(–12)3 + (7)3 + (5)3.