SOLUTION: (3 - 7i)(2 + 4i),firstly,you expand it.(this is complex number), (6 +12i - 14i +28 ) = 34 - 2i.ans(note: i^2 = -1.so -7i x +14i =28)

Algebra ->  Algebra  -> Rational-functions -> SOLUTION: (3 - 7i)(2 + 4i),firstly,you expand it.(this is complex number), (6 +12i - 14i +28 ) = 34 - 2i.ans(note: i^2 = -1.so -7i x +14i =28)       Log On

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Question 146494: (3 - 7i)(2 + 4i),firstly,you expand it.(this is complex number),
(6 +12i - 14i +28 ) = 34 - 2i.ans(note: i^2 = -1.so -7i x +14i =28)
SOLVED BY JAMES(A.K.A, BOMBARD)
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