Question

Find the 4th term in the expansion of (a + b)^6 in simplest form.

Answer 1

`20x^3y^3`

Explanation:

Using the binomial expansion theorem

`(x+y)^6 = x^6+6x^5y+15x^4y^2+20x^3y^3+15x^2y^4+6xy^5+y^6`

Thefore, the fourth term is

`20x^3y^3`

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