IDNLearn.com connects you with a global community of knowledgeable individuals. Our Q&A platform offers detailed and trustworthy answers to ensure you have the information you need.
Sagot :
To multiply the complex numbers [tex]\( (3 - 4i) \)[/tex] and [tex]\( (-2 - 2i) \)[/tex], follow these steps:
1. Express the multiplication in distributed form:
[tex]\[ (3 - 4i)(-2 - 2i) = 3(-2 - 2i) + (-4i)(-2 - 2i) \][/tex]
2. Distribute each term in the parentheses:
- For [tex]\(3(-2 - 2i)\)[/tex]:
[tex]\[ 3(-2) + 3(-2i) = -6 - 6i \][/tex]
- For [tex]\((-4i)(-2 - 2i)\)[/tex]:
[tex]\[ (-4i)(-2) + (-4i)(-2i) = 8i + 8i^2 \][/tex]
3. Recall that [tex]\( i^2 = -1 \)[/tex]:
[tex]\[ 8i^2 = 8(-1) = -8 \][/tex]
4. Combine the results:
[tex]\[ -6 - 6i + 8i - 8 \][/tex]
5. Combine the real parts and the imaginary parts:
- Combine the real parts:
[tex]\[ -6 - 8 = -14 \][/tex]
- Combine the imaginary parts:
[tex]\[ -6i + 8i = 2i \][/tex]
Therefore, the product of the complex numbers [tex]\( (3 - 4i) \)[/tex] and [tex]\( (-2 - 2i) \)[/tex] is:
[tex]\[ \boxed{(-14 + 2i)} \][/tex]
1. Express the multiplication in distributed form:
[tex]\[ (3 - 4i)(-2 - 2i) = 3(-2 - 2i) + (-4i)(-2 - 2i) \][/tex]
2. Distribute each term in the parentheses:
- For [tex]\(3(-2 - 2i)\)[/tex]:
[tex]\[ 3(-2) + 3(-2i) = -6 - 6i \][/tex]
- For [tex]\((-4i)(-2 - 2i)\)[/tex]:
[tex]\[ (-4i)(-2) + (-4i)(-2i) = 8i + 8i^2 \][/tex]
3. Recall that [tex]\( i^2 = -1 \)[/tex]:
[tex]\[ 8i^2 = 8(-1) = -8 \][/tex]
4. Combine the results:
[tex]\[ -6 - 6i + 8i - 8 \][/tex]
5. Combine the real parts and the imaginary parts:
- Combine the real parts:
[tex]\[ -6 - 8 = -14 \][/tex]
- Combine the imaginary parts:
[tex]\[ -6i + 8i = 2i \][/tex]
Therefore, the product of the complex numbers [tex]\( (3 - 4i) \)[/tex] and [tex]\( (-2 - 2i) \)[/tex] is:
[tex]\[ \boxed{(-14 + 2i)} \][/tex]
Your presence in our community is highly appreciated. Keep sharing your insights and solutions. Together, we can build a rich and valuable knowledge resource for everyone. IDNLearn.com is your reliable source for answers. We appreciate your visit and look forward to assisting you again soon.