Question

Find the exact value of (-1/2 + i(sqrt(3)/2))^7 and write the result in exact rectangular form.

Answer 1

\[(-\frac{ 1 }{ 2 } + i \frac{ \sqrt(3) }{ 2 })^{7}\]

Answer 2

@RadEn, do you know?

Answer 3

actually, use the binomial newton formula :
(a+b)^n = nC0(a)^(n-0)(b)^0 + nC1(a)^(n-1)(b) + nC2(a)^(n-2)(b)^2 + ... + nCn(a)^(n-n)(b)^n +

Answer 4

I have not learned that

Answer 5

hmmmm... for basic, u have to know about factorial like this :
4! = 4*3*2*1 = 24
3! = 3*2*1 = 6
and to calculating for combination, u can use the formula :
nCr = n!/((n-r)!r!)

Answer 6

maybe this site can help u
http://www.mathsisfun.com/pascals-triangle.html

Answer 7

or this :)
http://www.wolframalpha.com/input/?i=%28%28-1%2F2%29%2Bisqrt%283%29%2F2%29^7

Answer 8

I couldn't figure it out. This was on my final and I just took it. It was one of the extra credit problems so i'm not worried about it. Thanks anyway!

Answer 9

Read the excerpt of the poem. Then answer the questions.

excerpt from ''Paul Revere's Ride''
by Henry Wadsworth Longfellow

It was twelve by the village cl

Answer 10

How much does one sucrose molecule weigh in grams?

Answer 11

Herky and Elaina want to compare their investment accounts to see how much they will have in the accounts after eight years.

Answer 12

An airplane is flying at an altitude of 2,910 m, has mass of 5,320 kg, and experiences a drag force of 530 N.

Answer 13

Archery stuffff (:
(I'm not the best of course)

Answer 14

Just want to check the word order on this assignment

Answer 15

What is the main idea?
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Answer 16

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Answer 17

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Answer 19

triangle congruences

Answer 20

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Answer 22

Triangle congruence

Answer 23

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Answer 25

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is this right