1.3x^2-6x+5>0 2.-x^2+2x-7<0 3.-5x^2+20x-49<0 Giúp mik với (làm theo dạng chứng minh 1 biểu thức dương hoặc âm và phân tích thành hằng đẳng thức) mik cảm ơn ạ

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I.Change the following sentences of present continuous tense into passive voice. 1They are cooking eggs now.  Eggs 2.He is painting some pictures in the room.  Some pictures 3.Mr. Nam Truong is learning English in /but Son town.  English is........................................................................................................ 4 . We are trying some chocolates in the market at present.  Some chocolates............................................................................................. 5.Luan is feeding the pigs in his home.  The pigs........................................................................................................ 6. He is writing some letters in the classroom.  Some letters....................................................................................................... 7. People are reading Connan all over the country.  Connan is........................................................................................................ 8. They are providing money to the poor.  Money is........................................................................................................ 9. Harry is watering the flowers in the garden now.  The flowers........................................................................................................ 10. She is not growing rice on the farm now.  Rice is........................................................................................................