Math Problem Statement
Perform the indicated operation & simplify. Express the answer in terms of i (as a complex number): (4 - 2i)(8 + 7i) = ?
Solution
To solve , we will expand and simplify using the distributive property and the fact that .
Step 1: Expand the expression
Simplify each term:
Step 2: Simplify further
Combine the real and imaginary parts:
Since , substitute for :
Step 3: Final result
Combine the real parts:
Thus, the simplified result is:
Let me know if you want further clarifications! Here are some related questions:
- How do you multiply two complex numbers geometrically?
- What are the rules for simplifying complex numbers involving ?
- Can this be represented in polar form? How would you do it?
- How does the distributive property apply to complex numbers?
- What are some practical applications of multiplying complex numbers?
Tip: Always check for during simplifications to avoid errors in handling imaginary components!
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Math Problem Analysis
Mathematical Concepts
Complex Numbers
Distributive Property
Simplification
Formulas
(a + bi)(c + di) = (ac - bd) + (ad + bc)i
Theorems
i^2 = -1
Suitable Grade Level
Grades 10-12