Question

step by step solution Bata do

​

Answer 1

Answer:

ok baba

pls check in google

is your answer

Step-by-step explanation:

mark brainliest

Answer 2

Step-by-step explanation:

an = 4

d = 2

Sn = -14

an = a+(n-1)d

4=a+(n−1)2

4=a+2n−2

6=a+2n

•: a=6−2n...(1)

Sn=n/2[2a+(n−1)d]

−14= n/2[2(6−2n)+(n−1)2]

−28=n[12−4n+2n−2]

−28=12n−2n²-2n

−28=10n−2n²

−14=5n−n²

n²-5n-14=0

now by splitting the middle term,

n²-7n+2n-14

n(n-7)+2(n-7)

(n+2)(n-7)

so, n= -2,7

•: n can't be a negative term.

a=6−2n From (1)

a=6−2(7)

a = -8

hope it helps......:::)