7 51235 7) 2-5i 71-58 – InterviewSolution

1.

7 51235 7) 2-5i 71-58

Answer»

1. 5i(-3/5)i = -3i² = 3

4. 3(7+7i) +i(7+7i) = 21+21i+7i-7 = 14+28i

6. (1/5+2i/5) - (4+5i/2) = (1/5-4)+(2i/5-5i/2)= -19/5-21i/10

8. (1-i)⁴ = ((1-i)²)² = (1+i²-2i)² = (-2i)² = -4

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