Math Problem Statement
-i + (19 + 22i) - (8 - 14i) and -9i^65
Solution
Let's work through each question from the image.
Question 1:
Problem: Simplify and put your answer in standard form with NO SPACES.
Solution:
- Distribute the negative sign for the last term:
- Now, combine the real parts and imaginary parts separately:
- Real parts:
- Imaginary parts:
- Combine these results to get:
Answer:
Question 2:
Problem: Simplify
Solution:
- Recall that the powers of repeat in a cycle every four terms:
- To find , we divide 65 by 4 and look at the remainder: So, .
- Now, substitute back:
Answer:
Do you want more details on these solutions or have any questions?
Here are some related questions for further practice:
- How do you simplify expressions with complex numbers?
- What is the pattern of powers of and why do they repeat every four terms?
- How do you add and subtract complex numbers?
- What does it mean for a complex number to be in standard form?
- How do you multiply complex numbers and simplify the result?
Tip: Remember that the powers of cycle every four terms, so you can reduce high powers by finding the remainder when divided by 4.
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Math Problem Analysis
Mathematical Concepts
Complex Numbers
Algebra
Powers of i
Formulas
Standard form of a complex number: a + bi
Cycle of powers of i: i^1 = i, i^2 = -1, i^3 = -i, i^4 = 1
Theorems
Properties of Complex Numbers
Cyclic nature of powers of i
Suitable Grade Level
Grades 10-12