Question

please answer this question​

Answer 1

-1-(-1)

=-1+1

=0 is the answer

Answer 2

$\huge {\red{ \boxed{ \fcolorbox{blue}{purple}{ \bf \green{0 }}}}}$

Step-by-step explanation:

A.P. = - 1 , - 1 , - 1, .....

To find the common difference.

The formula of common difference is -

$\bf d = a_{k} - a_{k - 1}$

If we consider, k = 2, we can get

$\bf d = a_{2} - a_{1}$

Here,

$\bf a_{1} = - 1 \: and \: a_{2} = - 1$

So,

common difference (d) =

$\bf a_{2} - a_{1} \\ \\ \bf = > - 1 - ( - 1) \\ \\ \bf = > - 1 + 1 \\ \\ = > \large \bf\red{ 0}$

Hence,

The common difference is 0 .

Hope it helps.

#BeBrainly :-)