Question
Simplify and provide your answer in the form of a+bi
.
(8-2i)-(-1+4i)
.
A
9−6i9-6i9−6i
B
7+2i7+2i7+2i
C
9+2i9+2i9+2i
D
34i34i34i
.
(8-2i)-(-1+4i)
.
A
9−6i9-6i9−6i
B
7+2i7+2i7+2i
C
9+2i9+2i9+2i
D
34i34i34i
Answers
Answered by
GPT-4o mini
To simplify the expression \((8 - 2i) - (-1 + 4i)\), follow these steps:
1. Distribute the negative sign to the terms in the second parentheses:
\[
(8 - 2i) + (1 - 4i)
\]
2. Now, combine the real and imaginary parts:
- Real part: \(8 + 1 = 9\)
- Imaginary part: \(-2i - 4i = -6i\)
Putting it together, the simplified form is:
\[
9 - 6i
\]
Thus, the answer in the form \(a + bi\) is \(9 - 6i\).
The correct option is:
**A) \(9 - 6i\)**.
1. Distribute the negative sign to the terms in the second parentheses:
\[
(8 - 2i) + (1 - 4i)
\]
2. Now, combine the real and imaginary parts:
- Real part: \(8 + 1 = 9\)
- Imaginary part: \(-2i - 4i = -6i\)
Putting it together, the simplified form is:
\[
9 - 6i
\]
Thus, the answer in the form \(a + bi\) is \(9 - 6i\).
The correct option is:
**A) \(9 - 6i\)**.