Question

1) Find the value of
i) w power of 18 ii) w power of 21
iii) w power of -30
iv) w power of -105​

Answer 1

Answer:

1) w^18= w^3×w^3×w^3×w^3×w^3×w^3

= 1 [w^3=1]

The same goes with the other three sums. w^3 =1 and therefore the w to the power any no. which is a multiple of 3 will always be 1.

As 21, -30 ,-105 are the multiples of 3 their value will be 1.