Question

Mark the correct alternative.

1. if ×+1/× =5, then ×2 +1/×3. (a) 25 (b) 10 (c) 23 .
2. if a/b+b/a = ‐1,then a3 ‐ b3. (a) 14 (b) 8 (c) 2.
3. if a1/3 + b1/3 +c1/3 = 0, then
(a) a+b+c = 0 (b) (a+b+c)3 = 27 abc
(c) a+b+c = 3abc​

Answer 1

8786÷6888×589655

678iit6788668

68654.