làm nhanh giúp ,mình cần rất gấp

nhanh nha 30p nx mình phải nộp r

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Cho tam giác ABC, trực tâm H.Chứng minh hệ thức : AB^2+HC^2=BC^2+HA^2=CA^2+HB^2

Phân tích thành nhân tử: a(b² + c²) + b(c² + a²) + c(a² + b²) - 2abc - a³ - b³ - c³

Cho tam giác abc có a vuông vẽ ah vuông với bc trung tuyến Am a)CM HAB = MAC b) vẽ HD vuông với AB HE vuông với AC CM AM vuông với DC

V.Complete each sentence so it means the same as the sentence above. (3) 11.“ The film will begin at seven o’clock,” they told me. → They told me………………………………………………………………….. 12..The doctor advised me to have a rest. → The doctor suggested…………………………………………………………. 13.“Where do you live?” He asked me → He asked me ……………………………………………………………………… :v hơi ít

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V.Complete each sentence so it means the same as the sentence above.(2) 6. Jill doesn’t run as fast as Tom. →Tom runs……….……….……….……….……….……….……….………. 7. “ Do you review your lessons in the evening?” Our teacher said to Mai. →Our teacher…………………………………………… 8. “ Don’t draw on my wall, the boy” said the neighbour. →The neighbour………………………………………… 9. “ What did you help your Mom when you were a child, Dad?” The little girl said to her father. →The little girl …………………………………………. 10.“We don’t open the laboratory today,” Mr.Minh said. → Mr. Minh said …………………………………………………………………