Math, asked by richa91044, 1 year ago

please solve this question ​

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Answered by SRK1729
1

Step-by-step explanation:

let common difference =d

Am+n = a + d(m+n-1)

Am-n = a +d (m-n-1)

Am+n + Am-n =

=2a +d(m+n-1) +d(m-n-1)

= 2a +2dm -2d

=2 (a +dm-d)

= 2 [(a +d (m-1)]

= 2Am

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