Math, asked by eddie45, 1 year ago

please someone help me solve this!!

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Answered by Shreya1001
0
here is the best way to solve......
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eddie45: Thank you. But can you elaborate a little
Shreya1001: yup but this is the shortest way
eddie45: i did not understand how did you take (n-1)
Shreya1001: take common 2 from 2n-2
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