2 years ago

Helpppppppppppp ASAP THANKS

Mathematics

2 answers:

sergiy2304 [10]2 years ago

7 0

$(2+i)^3=(i+2)^3$ ↝ Properties

$(x+y)^3=x^3+3x^2y+3xy^2+y^3\\(i+2)^3=i^3+3(i)^2(2)+3(i)(2)^2+2^3\\(i+2)^3=i^3+6i^2+12i+8$

Proceed with define of complex number.

$i=\sqrt{-1}\\i^2=-1\\i^3=-i\\i^4=1$

$-i-6+12i+8\\2+11i$

Therefore, the answer is 2 + 11i

strojnjashka [21]2 years ago

4 0

Answer:

c or d

Step-by-step explanation:

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