SOLUTION: I have two questions I need help working through: 1) Multiply. Write the answer in a + bi form. (5-i)(3+i) 2) Perform the operation. Write the answer in a + bi form. 3 / 1 +

Algebra ->  Expressions-with-variables -> SOLUTION: I have two questions I need help working through: 1) Multiply. Write the answer in a + bi form. (5-i)(3+i) 2) Perform the operation. Write the answer in a + bi form. 3 / 1 +       Log On


   

Question 317545: I have two questions I need help working through:
1) Multiply. Write the answer in a + bi form. (5-i)(3+i)
2) Perform the operation. Write the answer in a + bi form. 3 / 1 + i
Can you please help me work through these?
Jerry
jerry@san.rr.com
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Use the FOIL method.
%285-i%29%283%2Bi%29=15%2B5i-3i-i%5E2
%285-i%29%283%2Bi%29=%2815%2B1%29%2B2i
%285-i%29%283%2Bi%29=16%2B2i
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.
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