SOLUTION: (1-i)(7+2i)

Question 612999: (1-i)(7+2i)
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Start with the given expression.

FOIL.

Multiply.

Replace with . Note: .

Multiply.

Combine like terms.

So .

So the expression is now in standard form where and

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