Math, asked by afrujahaque6206, 1 year ago

Find the sum of the first 22 terms of the ap 8,3,-2.......

Answers

Answered by disha11100
13

HEY MATE!

HERE IS YOUR ANSWER:

________________________________☆

In the AP 8,3,-2.....

first term (a)=8

common difference (d)=3-8=-5

number of terms (n)=22

Sum of first 22 terms =n/2[2a+(n-1)d]

S22=22/2[2×8+(22-1)-5]

S22=11[16+(21)-5]

S22=11[16-105]

S22=-976

Answered by shruti216619
15

Step-by-step explanation:

a = 8

d=3-8 = -5

S²² = n/2{2a +( n-1)d}

= 22/2 { 2×8 + 21× (-5)}

= 11 ( 16 - 105)

= 11×(-89)

=-979

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