Question

• Evalute (-2 -1i/3)^3​

Answer 1

Here's ur answer

solved by putting value of (i)²=-1

Answer 2

Step-by-step explanation:

(-2-i/3)^3

(a+b)^3=a^3+b^3+3a^2b+3b^2a

acc. to this.....

-(2+i/3)^3= -(8 + i^3/27 + 4i + 2i^2/3)

= -(8 - i/27+ 4i - 2/3)

.......... bcoz[i^3=-i and i^2=-1]

=-8 + i/27 -4i + 2/3 is the ans