Question

find the increasing arithmetic progression, the sum of whose first three terms is 27 and the sum of their square is 275​

Answer 1

Answer:

the answer is

4,9,12

Step-by-step explanation:

Let the numbers be a−d,a,a+d

so 3a=27⇒ a=9

Also (a−d)

2

+a

2

+(a+d)

2

=293.

3a

2

+2d

2

=293

d

2

=25

⇒ d=±5

therefore numbers are 4,9,14.