Mathematics
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OpenStudy (anonymous):
Find the product of the complex number and its conjugate. 3 + 3i
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OpenStudy (kirbykirby):
do you know what the conjugate is?
OpenStudy (anonymous):
3 +3i I thought?
OpenStudy (kirbykirby):
just change the sign to find the conjugate: 3-3i
OpenStudy (anonymous):
is the answer 18?
OpenStudy (kirbykirby):
now you just simply do \((3+3i)(3-3i)\)
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OpenStudy (kirbykirby):
yes :)
OpenStudy (anonymous):
thank you so much, I have some other problems that I have finished, can you check them for me?
OpenStudy (kirbykirby):
ok
OpenStudy (anonymous):
How do i write the expression in standard form 3/3-12i?
And I got:
1/17 + 4i/17
OpenStudy (kirbykirby):
\[\frac{3}{3-12i}\] ?
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OpenStudy (anonymous):
yes that is the question, and you have to write it in standard form.
OpenStudy (kirbykirby):
oh ok
OpenStudy (anonymous):
I got 1/17 + 4i/17
OpenStudy (kirbykirby):
yep
OpenStudy (anonymous):
alright, next is
Write the sum or difference in the standard form a + bi.
( 4 - 2i) + ( 9 + 6i)
And I got 13 + 4i
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OpenStudy (kirbykirby):
yes
OpenStudy (anonymous):
( 9 + 5i)( 9 + 8i)
And I got;
41 + 117i
The possible answers are;
41 - 117i
40i2 + 117i + 81
121 - 27i
41 + 117i
OpenStudy (kirbykirby):
your answer is correct
OpenStudy (anonymous):
YOUR A FREAKING HERO
OpenStudy (kirbykirby):
lol your welcome :)
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OpenStudy (anonymous):
I have 5 questions that I need help with if you know anyhting about the fundomental theorum of algebra