Answer:
C.
Step-by-step explanation:
I'm not sure on what exactly your equation is supposed to be...so I rewrote it
let the number be x.
<em>according</em><em> </em><em>to </em><em>Question</em><em>.</em><em>.</em><em>.</em>
<em></em>
hope helpful~
Answer:
rfgwtwg
Step-by-step explanation:
The rows add up to
, respectively. (Notice they're all powers of 2)
The sum of the numbers in row
is
.
The last problem can be solved with the binomial theorem, but I'll assume you don't take that for granted. You can prove this claim by induction. When
,
so the base case holds. Assume the claim holds for
, so that
Use this to show that it holds for
.
Notice that
So you can write the expansion for
as
and since
, you have
and so the claim holds for
, thus proving the claim overall that
Setting
gives
which agrees with the result obtained for part (c).