1. I don't know
2. is -14 + 8i
3. is 2i+7-l
I hope this helps! :)
1) 4b-5t(-a-3)i=7-8i
2) (7+4i) - (l+2i)
3) (3+2i) (-2+4i)
8 answers
thank you
but can u show me how u got it?
but can u show me how u got it?
Oops, I am Anonymous! Sorry!
Anyways for 1, I still don't know.
For 2, it is -14 + 8i.
For 3, it is 2i+7-l
I hope this helps! :)
Anyways for 1, I still don't know.
For 2, it is -14 + 8i.
For 3, it is 2i+7-l
I hope this helps! :)
i know i mean how did you get it like how your answer so i can use it for my other questions.
1. 4b-5t(-a-3)i=7-8i
You don't say what you want.
I see 3 variables in one equation, are you solving for one of them or what?
2. (7+4i) - (l+2i)
is that supposed to say (7+4i) - (1+2i) ?
then
= 7+4i - 1 - 2i
= 6 + 2i
3.
(3+2i) (-2+4i)
= -6 + 12i - 4i + 8i^2
= -6 + 8i - 8 , remember i^2 -1
= -14 + 8i
You don't say what you want.
I see 3 variables in one equation, are you solving for one of them or what?
2. (7+4i) - (l+2i)
is that supposed to say (7+4i) - (1+2i) ?
then
= 7+4i - 1 - 2i
= 6 + 2i
3.
(3+2i) (-2+4i)
= -6 + 12i - 4i + 8i^2
= -6 + 8i - 8 , remember i^2 -1
= -14 + 8i
Sorry, I didn't see your post before my second post. I made a typo error as well in my two posts. I meant to say:
2. is 2i+7-l
3. is -14 + 8i
For 2:
I got my answer off researching.
(7+4i) - (l+2i)
Multiply i and 4 = 4i
Multiply i and 1 = i
7+4*i = 7+4i
Multiply i and 2 = 2i
Multiply i and 1 = i
l+2*i = l+2i
Subtract polynomials 7+4i & l+2i. Subtract terms in one polynomial with any like terms in the other polynomial.
Be careful with "-" in front of l+2i. Used on all terms in it.
4i - 2i = 2i
The answer is 2i+7-l
(7+4*i)-(l+2*i) = 2i+7-l
The final answer is:
2i+7-l
For 3:
I can't really explain, even though I will try.
(3+2i) (-2+4i) =
(3 + (2 * i)) * ((-2) + (4 * i)) =
-14 + 8 i
That's as best as I could explain both. I got both from researching and doing the problems, so I can't really explain by that.
I hope this helps?
2. is 2i+7-l
3. is -14 + 8i
For 2:
I got my answer off researching.
(7+4i) - (l+2i)
Multiply i and 4 = 4i
Multiply i and 1 = i
7+4*i = 7+4i
Multiply i and 2 = 2i
Multiply i and 1 = i
l+2*i = l+2i
Subtract polynomials 7+4i & l+2i. Subtract terms in one polynomial with any like terms in the other polynomial.
Be careful with "-" in front of l+2i. Used on all terms in it.
4i - 2i = 2i
The answer is 2i+7-l
(7+4*i)-(l+2*i) = 2i+7-l
The final answer is:
2i+7-l
For 3:
I can't really explain, even though I will try.
(3+2i) (-2+4i) =
(3 + (2 * i)) * ((-2) + (4 * i)) =
-14 + 8 i
That's as best as I could explain both. I got both from researching and doing the problems, so I can't really explain by that.
I hope this helps?
Reiny is correct for 2, I forgot to subtract 1 from 7 to get her answer. Sorry!!
P.S. Go with Reiny, she is a tutor on this website, I was just trying to help though.
P.S. Go with Reiny, she is a tutor on this website, I was just trying to help though.
I am Anonymous again! I don't know why it keeps doing this!
"Reiny is correct for 2, I forgot to subtract 1 from 7 to get her answer. Sorry!!
P.S. Go with Reiny, she is a tutor on this website, I was just trying to help though."
"Reiny is correct for 2, I forgot to subtract 1 from 7 to get her answer. Sorry!!
P.S. Go with Reiny, she is a tutor on this website, I was just trying to help though."