Question

formula a-b^7 equal to​

Answer 1

Answer:

$hello$

The Binomial Theorem states that [math](x+y)^n = \sum_{k=0}^n {n \choose k} x^{n - k} y^k[/math].

Applying this to your question, you can work it out to obtain [math]a^7 - 7a^6b + 21a^5b^2 - 35a^4b^3 + 35a^3b^4 - 21a^2b^5 + 7ab^6 - b^7.[/math]

Answer 2

The Binomial Theorem states that [math](x+y)^n = \sum_{k=0}^n {n \choose k} x^{n - k} y^k[/math].

Applying this to your question, you can work it out to obtain [math]a^7 - 7a^6b + 21a^5b^2 - 35a^4b^3 + 35a^3b^4 - 21a^2b^5 + 7ab^6 - b^7.[/math]