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# Binomial Thereom! Help! Is no one capable of helping?

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Binomial Thereom! Can someone explain this? Expand (x-y)^4 using the binomial thereom. I did it! Kinda at least! It took me trying to figure it out without the textbook! :)

Apr 14, 2020
edited by Guest  Apr 14, 2020
edited by Guest  Apr 14, 2020

#1
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Did you look it up in your Textbook? It should all be explained there. If you don't understand it, then consult your Math Teacher. Good luck to you.

Apr 14, 2020
#2
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I did.

Guest Apr 14, 2020
#3
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My teacher is lost and confused as well...... HELP!

Guest Apr 14, 2020
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$$(x-y)^4 \\=\begin{pmatrix}4\\0\end{pmatrix}(x)^4(-y)^0+ \begin{pmatrix} 4\\ 1 \end{pmatrix}(x)^3(-y)^1 +\begin{pmatrix} 4\\ 2 \end{pmatrix} (x)^2(-y)^2 +\begin{pmatrix}4\\3\end{pmatrix}(x)^1(-y)^3 +\begin{pmatrix} 4\\ 4 \end{pmatrix}(x)^0(-y)^4$$

Work out the pattern and then finish it yourself.

You can ask questions if you want.

Apr 14, 2020