Question

the second term of binomial expansion of (x+y)^4 is
​

Answer 1

Use binomial theorem to determine the coefficients of the second term and the exponents of y and x in that term.

Explanation:

enter image source here

This equation above allows you to calculate any term in a binomial relationship as long as you know "n", which in this case is 4.

The first term according to this formula would be a^n or in your case, y^4.

In order to find the second term, you need to use the next term that is in the equation:

enter image source here