Có bao nhiêu giá trị \(x\) nguyên dương thỏa mãn $\left( {x - 3} \right).\left( {x + 2} \right) = 0$ là:

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

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

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

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

\( - 210\)

\(210\)

\( - 47\)

\(37\)

\( - 365.366 < 1\)

\( - 365.366 = 1\)

\( - 365.366 =  - 1\)

\( - 365.366 > 1\)

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

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

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

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

\(\left( { - 19} \right).\left( { - 7} \right) > 0\)

\(3.\left( { - 121} \right) < 0\)

\(45.\left( { - 11} \right) <  - 500\)  

\(46.\left( { - 11} \right) <  - 500\)

\( - 100\)

\(100\)  

\( - 96\)

\( - 196\)

\({3^8}\) 

\( - {3^7}\)   

\({3^7}\)                  

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