_(1)=5-5i, () _(2)=-3+4i 罒 (dfrac ({z)_(1)}({z)_(2)}) (整体取共-|||-A -dfrac (7)(5)-dfrac (1)(5)-|||-B) -dfrac (7)(5)+dfrac (1)(5)i-|||-C) dfrac (7)(5)-dfrac (1)(5)-|||-D dfrac (7)(5)+dfrac (1)(5)

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