Question

if an=-2n+5 in an A.P find the common difference

Answer 1

hey there!!
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◆Given that:

=>an = -2n + 5

Now we can evaluate

=> a1 = -2(1)+5 = 3

=> a2 = -2(2)+5 = 1

=> a3 = -2(3) +5 = -1

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=> an = -2n + 5

so we know that common difference(d)

is difference of two successive terms .

=) d = a2 - a1

=> d = 1 - 3 = -2 answer.

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◆Hope it will help you

Answer 2

Answer:

Here's is your answer dear.