• Evalute (-2 -1i/3)^3
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3
Here's ur answer
solved by putting value of (i)²=-1
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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
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