Solve

[kindred mantle]

?

Where am wrong?

Anyone?

[stone pine]

Where did the 5 come from?

[kindred mantle]

nc1

[stone pine]

Oh I misread

[kindred mantle]

Fast

[stone pine]

What about the 100^2 and 100 terms?

[stone pine]

You stop at 100^3

[kindred mantle]

Yes?

[stone pine]

You’re missing 2 more things

[kindred mantle]

Which?

[stone pine]

.

5c3 100^5-3 * (-1)^3

And 5c4 100^5-4 (-1)^4

[kindred mantle]

In my book thr formula is to use only till 2

[stone pine]

Can you show a picture

I’m guessing it’s because of the dots

[kindred mantle]

Notes

[stone pine]

Do you see the + … +

Usually this means from 2 to n

[kindred mantle]

Hmmm

So for ncn a0 bn we will not use in working the problem only 0 1 2 3 4 5?

Always?

[stone pine]

I believe ncn is used

It’s the -1

5c5 100^0 (-1)^5=-1

[kindred mantle]

That is b

ncn how?

[stone pine]

I don’t understand the question

[kindred mantle]

Someone else can solve it?

[stone pine]

$\begin{pmatrix} n \ n \end{pmatrix} = \frac{n!}{n!(n-n)!}=\frac{n!}{n!(0)!}=1$

[humble garnet]

alexplqys