题目内容

(1+i)+(3+4i)=

A. 4+5i
B. 5+4i
C. 4+4i
D. 5+5i

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(1+i)(1+i)=

A. 2+2i
B. 2i
C. 2
D. -2i

(3-2i)/(2+3i)=

A. i
B. -i
C. 2+i
D. 2-i

-1-i的主辐角是()

A. Π/4
B. -Π/4
C. 3Π/4
D. -3Π/4

1+根号3i的三角表示为().

A. cos(Π/3)+isin(Π/3)
B. cos(Π/3)-isin(Π/3)
C. 2[cos(Π/3)+isin(Π/3)]
D. 2[cos(Π/3)-isin(Π/3)]

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