解
展開する 16(s+s′)12
解
16s12+192s11s′+1056s10(s′)2+3520s9(s′)3+7920s8(s′)4+12672s7(s′)5+14784s6(s′)6+12672s5(s′)7+7920s4(s′)8+3520s3(s′)9+1056s2(s′)10+192s(s′)11+16(s′)12
解答ステップ
16(s+s′)12
(s+s′)12=s12+12s11s′+66s10(s′)2+220s9(s′)3+495s8(s′)4+792s7(s′)5+924s6(s′)6+792s5(s′)7+495s4(s′)8+220s3(s′)9+66s2(s′)10+12s(s′)11+(s′)12
=16(s12+12s11s′+66s10(s′)2+220s9(s′)3+495s8(s′)4+792s7(s′)5+924s6(s′)6+792s5(s′)7+495s4(s′)8+220s3(s′)9+66s2(s′)10+12s(s′)11+(s′)12)
括弧を分配する=16s12+16⋅12s11s′+16⋅66s10(s′)2+16⋅220s9(s′)3+16⋅495s8(s′)4+16⋅792s7(s′)5+16⋅924s6(s′)6+16⋅792s5(s′)7+16⋅495s4(s′)8+16⋅220s3(s′)9+16⋅66s2(s′)10+16⋅12s(s′)11+16(s′)12
簡素化 16s12+16⋅12s11s′+16⋅66s10(s′)2+16⋅220s9(s′)3+16⋅495s8(s′)4+16⋅792s7(s′)5+16⋅924s6(s′)6+16⋅792s5(s′)7+16⋅495s4(s′)8+16⋅220s3(s′)9+16⋅66s2(s′)10+16⋅12s(s′)11+16(s′)12:16s12+192s11s′+1056s10(s′)2+3520s9(s′)3+7920s8(s′)4+12672s7(s′)5+14784s6(s′)6+12672s5(s′)7+7920s4(s′)8+3520s3(s′)9+1056s2(s′)10+192s(s′)11+16(s′)12
=16s12+192s11s′+1056s10(s′)2+3520s9(s′)3+7920s8(s′)4+12672s7(s′)5+14784s6(s′)6+12672s5(s′)7+7920s4(s′)8+3520s3(s′)9+1056s2(s′)10+192s(s′)11+16(s′)12