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Trần Quang Linh 17/03/2017 at 15:53A=3+32+33+...+32000
3A=32+33+34+...+32001
2A=32001-3
A=\(\dfrac{3^{2001}-3}{2}\)
steve jobs selected this answer. -
Love people Name Jiang 17/03/2017 at 18:41Ta có : 3 + 32 + 33 + ...... + 32000
=> 3A = 32 + 33 + 34 + ...... + 32001
=> 3A - A = 32001 - 3
=> 2A = 32001 - 3
=> A = \(\dfrac{3^{2001}-3}{2}\)
Good
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FA KAKALOTS 03/02/2018 at 12:46Ta có : 3 + 32 + 33 + ...... + 32000
=> 3A = 32 + 33 + 34 + ...... + 32001
=> 3A - A = 32001 - 3
=> 2A = 32001 - 3
=> A = 32001−32
Good