 arsen7076ovwzre 
                                                26.07.2020 00:14
                                                
                                                arsen7076ovwzre 
                                                26.07.2020 00:14
                                             arsenijcurikov 
                                                26.07.2020 00:14
                                                
                                                arsenijcurikov 
                                                26.07.2020 00:14
                                             Дарига65 
                                                26.07.2020 00:13
                                                
                                                Дарига65 
                                                26.07.2020 00:13
                                             alena645 
                                                26.07.2020 00:13
                                                
                                                alena645 
                                                26.07.2020 00:13
                                             Glebforst 
                                                26.07.2020 00:13
                                                
                                                Glebforst 
                                                26.07.2020 00:13
                                             romaroma6 
                                                26.07.2020 00:13
                                                
                                                romaroma6 
                                                26.07.2020 00:13
                                             aylinafedorovaoyhkfx 
                                                26.07.2020 00:13
                                                
                                                aylinafedorovaoyhkfx 
                                                26.07.2020 00:13
                                             дтш 
                                                26.07.2020 00:13
                                                
                                                дтш 
                                                26.07.2020 00:13
                                             Gatkek 
                                                26.07.2020 00:13
                                                
                                                Gatkek 
                                                26.07.2020 00:13
                                            
ответ: m³-8m²
64-(4-m)(16+4m-m²) = 64-(64 + 16m - 4m² -16m - 4m² + m³) = m³-8m²