Question

write the first term and comman difference if -11 -8 -5 are in AP​

Answer 1

Answer:

Here

first term(a)=-11

common difference (d)=-11-(-8)

=-3

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Answer 2

Step-by-step explanation:

if a,b,c are in AP then 2b=a+c

here, 2×(-8)=-11-5

so yeah, they form an AP

now let a-d=-11 ...(i)

a=-8 ...(ii)

a+d=-5 ...(iii)

from equations, d=-3

hence first three terms are -8, -8-3, -8-3×2

=-8, -11, -14