3(2a-3b)-(0,5a+b)=                                                                                                                            2b в квадрате a(3ab)в кубе=          второй пример                                                                        x(2a+3b-c)=                                      третий пример                                                                       2p в квадрате q (3p-q)-pq(6qв квадрате-2pq)  четвёртый пример                                              5(3a в квадрате-b)+(3b-b в квадрате)               пятый пример                                                 помогите плллииизззз!!!!!