Question

I know this is crazy, but can someone work out (x-5)^5, and make sure I got the right answer? :/

Answer 1

what answer did you get?

Answer 2

x^5-25x^4+250x^3-750x^2+1875x-3125. I really hope that's right, becasue I really don't feel like going through all of that again. :c

Answer 3

i organize the information like this
\[\begin{matrix}\\
1&5&10&10&5&1\\
x^5&x^4&x^3&x^2&x^1&x^0\\
(-5)^0&(-5)^1&(-5)^2&(-5)^3&(-5)^4&(-5)^5
\end{matrix}\]

then its multiply down the columns and add the final row

Answer 4

750 seems bad to me

Answer 5

@amistre64 sorry about spamming this question but please look at math chat its about one of ur ambass.

Answer 6

i think you started adding instead of multiplying for those -5 exponents

Answer 7

What's wrong with 750?

Answer 8

Oh, wait. I see; hang on.

Answer 9

Should be -1250.

Answer 10

I didn't start adding, I did 5x5x3. -_-

Answer 11

\[x^{5}-25x^{4}+250x^{3}-1250x^{2}+3125x-3125\]

Answer 12

@amistre64

Answer 13

yeah, thats looks better

Answer 14

Yay. c:

Answer 15

Thanks again. God bless! C: