binomial theorem!
posted by nicholas on .
How do i do this question using the binomial theorem concept? It says,
expand (2+x)^5 up to x^2 term, hence, expand (2 + x + x^2)^5 up to the x^2 term.
I could do the first part, and the answer would be (32 + 80x + ...)
But how should i make use of the answer i got in the second part?
please help!

Do the second part this way:
((2+x) + x^2)^5
you get the x^2 term really fast.