Question

expand (2x-1)^5

Answer 1

calculate (2x-1)^5

Answer 2

( 2x - 3y )4

= (2x)4 + 4(2x)3(-3y) + 6(2x)2(-3y)2 + 4(2x)(-3y)3 + (-3y)4

Answer 3

32x^5 - 80x^4 + 80x^3 - 40x^2 +10x - 1

Answer 4

10x - 5 because:


you multiply the numbers inside the parenthesis by the exponent of 5 so,
2x multiplied by 5 is 10x and -1 by 5 to get -5...

Answer 5

binomial theory, or binomial expansion i forget what it is called.

Answer 6

this is just a busy work problem. MrSensitive has the right answer.
@giulsvalentini do you know how to do it or do you need us to explain it to you?

Answer 7

I have to use the Triangolo di Trataglia, di you know it?
sorry for my English, I'm Italian :) @Peter14

Answer 8

Pascal's triangle? yes, I know it

Answer 9

so I have to apply th formule of the development of i don't know do you say power
(a^n)?

Answer 10

http://www.mathsisfun.com/algebra/binomial-theorem.html

it's the binomial theorem.

Answer 11

exactly! @timo86m

Answer 12

link explains it very well.

Answer 13

if you don't know how to say something in english say it in italian. I know spanish so I could understand, and if I don't there's always google translate

Answer 14

I think today I won't do my math's homeworks.

Answer 15

Thank you @timo86m

Answer 16

you're skipping a day of math homework? it will only be harder tomorrow...

Answer 17

@giulsvalentini I will help...