解答
展开 72e4tu(t−8)10
解答
72e4tt10u−5760e4tt9u+207360e4tt8u−4423680e4tt7u+61931520e4tt6u−594542592e4tt5u+3963617280e4tt4u−18119393280e4tt3u+54358179840e4tt2u−96636764160e4ttu+810⋅72e4tu
求解步骤
72e4tu(t−8)10
(t−8)10=t10−80t9+2880t8−61440t7+860160t6−8257536t5+55050240t4−251658240t3+754974720t2−1342177280t+810
=72e4tu(t10−80t9+2880t8−61440t7+860160t6−8257536t5+55050240t4−251658240t3+754974720t2−1342177280t+810)
打开括号=72e4tut10+72e4tu(−80t9)+72e4tu⋅2880t8+72e4tu(−61440t7)+72e4tu⋅860160t6+72e4tu(−8257536t5)+72e4tu⋅55050240t4+72e4tu(−251658240t3)+72e4tu⋅754974720t2+72e4tu(−1342177280t)+72e4tu⋅810
使用加减运算法则+(−a)=−a=72e4tt10u−72⋅80e4tt9u+72⋅2880e4tt8u−72⋅61440e4tt7u+72⋅860160e4tt6u−72⋅8257536e4tt5u+72⋅55050240e4tt4u−72⋅251658240e4tt3u+72⋅754974720e4tt2u−72⋅1342177280e4ttu+810⋅72e4tu
化简 72e4tt10u−72⋅80e4tt9u+72⋅2880e4tt8u−72⋅61440e4tt7u+72⋅860160e4tt6u−72⋅8257536e4tt5u+72⋅55050240e4tt4u−72⋅251658240e4tt3u+72⋅754974720e4tt2u−72⋅1342177280e4ttu+810⋅72e4tu:72e4tt10u−5760e4tt9u+207360e4tt8u−4423680e4tt7u+61931520e4tt6u−594542592e4tt5u+3963617280e4tt4u−18119393280e4tt3u+54358179840e4tt2u−96636764160e4ttu+810⋅72e4tu
=72e4tt10u−5760e4tt9u+207360e4tt8u−4423680e4tt7u+61931520e4tt6u−594542592e4tt5u+3963617280e4tt4u−18119393280e4tt3u+54358179840e4tt2u−96636764160e4ttu+810⋅72e4tu