Chọn câu trả lời đúng:

$\left( { - 5} \right).25 =  - 125$                         

$6.\left( { - 15} \right) =  - 90$                            

$125.\left( { - 20} \right) =  - 250$                          

$225.\left( { - 18} \right) =  - 4050$

\( - 210\)

\(210\)

\( - 47\)

\(37\)

\(\left( { - 20} \right).\left( { - 5} \right) =  - 100\)

\(\left( { - 50} \right).\left( { - 12} \right) = 600\)

\(\left( { - 18} \right).25 =  - 400\)   

\(11.\left( { - 11} \right) =  - 1111\)

\({3^8}\) 

\( - {3^7}\)   

\({3^7}\)                  

\({\left( { - 3} \right)^8}\)

\( - 200000\)

\( - 2000000\)

\(200000\)

\( - 100000\)

\(\left( { - 23} \right).\left( { - 16} \right) > 23.\left( { - 16} \right)\)

\(\left( { - 23} \right).\left( { - 16} \right) = 23.\left( { - 16} \right)\)   

\(\left( { - 23} \right).\left( { - 16} \right) < 23.\left( { - 16} \right)\) 

\(\left( { - 23} \right).16 > 23.\left( { - 6} \right)\)