Mathematics
Senior High
これらの計算の途中過程を、教えてください。
(6) 4k2
k=1
(7) 4k
(8)
k=1
(3k - 2)
(9) (2k
k=1
(2k-5)
(10) (3k² - 2k)
答.
2n (n + 1) (2n+1)
3
. 2n (n+1)
答.
3n²-n
2
n²-4n
2n³+n²-n n (n + 1) (2n-1)
2
2
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