please help fast
step wise explanation
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Alexander Graham Bell was a Scottish-born inventor, scientist, and engineer who is credited with inventing and patenting the first practical telephone. He also co-founded the American Telephone and Telegraph Company in 1885
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ANSWER
(343
n+1
)
3
2
7
2n+3
49
n−2
=
((7
3
)
n+1
)
3
2
7
2n+3
(7
2
)
n−2
=
(7
3n+3
)
3
2
7
2n+3
7
2n−4
=
7
2n+2
7
2n+3+2n−4
=
7
2n+2
7
4n−1
=7
4n−1−2n−2
=7
2n−3
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