How do I find the binomial expansion of #(2x+1)^3#?
2 Answers
Explanation:
We must use our knowledge of the binomial expansion:
Method 1:
We can use:
Substituting
Method 2:
We can use:
Letting
Explanation:
we use Pascal's triangle for the coefficients
so we need
the powers of the terms will sum to
and startingthe first term will be
thus