Question

jaldi bata do please......
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Answer 1

Step-by-step explanation:

Let the first three terms be a-d,a,a+d?

sum of first three terms is 15

a-d+a+a-d=15

3a=15

a=5

sum of their square=93 (given)

a-d whole square + a square + a+d whole square=93

a square + d square -2ad + a square + a square+d square +2ad =93

3a square +2d square=93

let a=5

3(5) whole square + 2d=93

2d square=93-75=18

d square =9

d=3,-3

1st AP=2,5,8 (when d=3)

2nd AP =8,5,3 (when d= -3)