Question

(n + 1)² - n² =?
please give me ​

Answer 1

• $(n+1)^{2} - n^2=xn^2+1-n^2=x0-1=xx=0$

Answer 2

Question :-

• (n + 1)² - n² =?

Answer :-

Using the identity a² - b² = (a+b) (a-b)

a = (n+1)

b = n

So,

(n + 1)² - n²

= (n + 1 +n) (n + 1 - n)

= (2n + 1) ( 1)

= 1(2n + 1)