展开 (12n+6)-!!(10n-2)

解答

展开

(12 n + 6) -!! (10 n - 2)

120 -!! n^{2} + 36 -!! n - 12 -!!

求解步骤

(12 n + 6) -!! (10 n - 2)

= -!! (12 n + 6) (10 n - 2)

乘开

(12 n + 6) (10 n - 2) : 120 n^{2} + 36 n - 12

= -!! (120 n^{2} + 36 n - 12)

乘开

-!! (120 n^{2} + 36 n - 12) : 120 -!! n^{2} + 36 -!! n - 12 -!!

= 120 -!! n^{2} + 36 -!! n - 12 -!!

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