Question

find the some of first 22th term of the ap 8 ,3,-2​

Answer 1

Answer:

sn= 22/2(2×8+(22-1) -5)

sn=11(16-105)

sn=11(-89)

SN= -979

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

GIVEN terms of AP 8,3,-2.

a=a1=8

d=a2-a1

d=3-8

d=-5

*sum of the terms in an ap is followed by a formula as follow.

sn=n/2(2a+(n-1)d)

here

n=number of term =22

a=8

d=-5

substituting the values in the formula

S22=22/2(2×8+[22-1]-5)

S22=22/2(16+[21]-5)

S22=22/2(16-105)

S22=22/2(-89)

S22=11×(-89)

S22=(-979)

*therefore the sum of 22 terms in the given APis -979.