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Perform the Indicated Operation [4cis5π9]2\left[ 4 \operatorname { cis } \frac { 5 \pi } { 9 } \right] ^ { 2 }

Question 404

Multiple Choice

Perform the indicated operation. Give answers in rectangular form expressing real and imaginary parts to four decimal
places.
- [4cis5π9]2\left[ 4 \operatorname { cis } \frac { 5 \pi } { 9 } \right] ^ { 2 }


A) 3.75881.3681i- 3.7588 - 1.3681 \mathrm { i }
B) 15.03515.4723i- 15.0351 - 5.4723 \mathrm { i }
C) 2.7784+15.7569i- 2.7784 + 15.7569 \mathrm { i }
D) 5.472315.0351i- 5.4723 - 15.0351 \mathrm { i }

Correct Answer:

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