Question

pls answer this 14th one urgent​

Answer 1

Step-by-step explanation:

Answer is here check out

Answer 2

Step-by-step explanation:

let three consecutive numbers in AP be

a-d,a,a+d

as per question

a-d+a+a+d=51

3a=51

a=17

again

(a-d)(a+d)=273

a^2-d^2=273

17^2-d^2=273

289-d^2=273

-d^2=273-289

-d^2=-16

d^2=16

d=4

so the third term is a+d=17+4=21.