Question

Determine the first term of the binomial expansion (x + y)4.

Answer 1

`image`

So,

The first term of the binomial expansion
`(x + y)^4` is

`(x + y)^4 = x^4 + \binom{4}{1}x^(4-1)y+...`

We only need the first term, so, the first term of the binomial expansion
`(x + y)^4` is
`x^4`

Answer 2

The first term is x⁴.

_____

The remaining terms are +4x³y + 6x²y² +4xy³ +y⁴.