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\(1.2.3...9-1.2.3...8-1.2.3...8^2\)
\(=\left(1.2.3...8\right).9-1.2.3...8-1.2.3..8.8\)
\(=\left(1.2.3....8\right)8-1.2.3.4...8\)
\(=1.2.3...8.8-1.2.3...8.8\)
\(=0\)
1.2.3.......9-1.2.3...8-1.2.3....82
=1.2.3.......9-1.2.3.........8-1.2.3....8.8
= 1.2.3....8(9-1-8)
=1.2.3......8.0
=0
1.2.4...9-1.2.3...8-1.2.3...7.82
=8!.9-8!.1-8!.8
=8!(9-1-8)
=8!.0
=0
tick ủng hộ mình nhá!
1.2.3...9-1.2.3...8-1.2.3...7.82
= (1.2.3.4.5.6.7).9 - (1.2.3.4.5.6.7).8 - (1.2.3.4.5.6.7).1
= (1.2.3.4.5.6.7).(9-8-1)
=(1.2.3.4.5.6.7).0
= 0
1.2.3...9 - 1.2.3...8 - 1.2.3...7.82
= 1.2.3...8.( 9 - 1 - 8)
= 1.2.3..8.0
= 0
Chúc cậu học tốt nhé!!
a) \(1.2.3....9-1.2.3...8-1.2.3...7.8^2\)
\(=1.2.3....8.\left(9-1-8\right)\)
\(=1.2.3...8.0\)
\(=0\)
\(b)\) \(1.2.3...9-1.2.3...8-1.2.3...8^2\)
\(=\)\(1.2.3...8\left(9-1-8\right)\)
\(=\)\(1.2.3...8\left(9-9\right)\)
\(=\)\(1.2.3...8.0\)
\(=\)\(0\)
1.2.3...9 - 1.2.3...8 - 1.2.3...82
= 1.2.3...8.(9 - 1 - 8)
= 1.2.3...8.0
= 0
Học tốt nhé
=0 k mik nhé