Question

17.12.25+51.2.5+85.14

Neu tinh nhanh duoc thi tinh giup em nhe.Cam on a

Answer 1

\(17.12.25+51.2.5+85.14\)

\(=17.12.25+17.3.2.5+17.5.14\)

\(=17.2.2.3.5.5+17.2.3.5+17.5.2.7\)

\(=17.2.5\left(2.3.5+3+7\right)\)

\(=170.40\)

\(=6800\)

Answer 2

17.12.25+51.2.5+85.14

=17.3.4.25+51.2.5+17.5.14

=17.3.(4.25)+51.10+17.5.14

=17.3.100+17.3.10+17.5.7.2

=17.3.100+17.3.10+17.7.10

=17.(3.100+3.10+7.10)

=17.(300+30+70)

=17.400=6800