Math, asked by brilliantkalai2004, 1 year ago

A9=0,prove a29=2(A19)

Answers

Answered by vishwadeepreddy

2

Answer:

A9=0

a+8d=0a=-8d------- 1

now to prove

a29=2a19

a+28d=2a+36d

-8d+28d=-16d+36d

20d=20d

since LHS=RHS

hence proved

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