Math Problem Statement
(3 + 4i)(2 - 2i)
Solution
The given expression is , where represents the imaginary unit.
Let's multiply these two complex numbers using the distributive property (FOIL method):
Step-by-step multiplication:
- First, multiply the first terms:
- Multiply the outer terms:
- Multiply the inner terms:
- Multiply the last terms: Since , this becomes:
Now, combine all these results:
Combine like terms:
Final result:
Would you like more details on any part of this? Here are five related questions for further exploration:
- What is the general formula for multiplying two complex numbers?
- How does affect complex number calculations?
- Can you represent the result on the complex plane?
- What is the geometric interpretation of multiplying complex numbers?
- How would you divide two complex numbers?
Tip: Always remember that when multiplying two complex numbers, use the FOIL method and simplify using the fact that .
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Math Problem Analysis
Mathematical Concepts
Complex Numbers
Algebra
Formulas
(a + bi)(c + di) = (ac - bd) + (ad + bc)i
Theorems
Multiplication of complex numbers
i^2 = -1
Suitable Grade Level
Grades 10-12