Chứng minh 2 biểu thức bằng nhau 1991×1996.1989-1993×1988×1995=2005×2010×2003-2007×2002×2009 Giúp mk vế phải thôi nhé ( giải thích rõ hộ mk nhé)

Giúp e với ạ e cần gấp lắm🙇🏻‍♂️🙏🏻🙏🏻

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I. Complete the sentences. Use the correct form of the words in brackets. 1. He’s driving ....................................................... he should. (much / quickly) 2. Football is ....................................................... sport in Europe today. (by far / popular) 3. My car is ........................................... yours but I think it’s a ........................................... car. (not expensive / good) 4. I don’t have ....................................................... you but I’m ........................................ (nearly / much / money, far / happy) 5. Ted got....................................................... Valerie did. (same / mark) 6. Audrey’s personality is....................................................... her brother’s. (very similar) 7. The house looks ....................................................... the way it looked before it was painted. (completely / different) 8. He cared ....................................................... and ....................................................... about the band and eventually he decided to leave. (little, little) 9. ....................................................... I become, ....................................................... mistakes I seem to make. (old, many) V. Put the verbs in brackets into the correct tense. 1. Keep the noise down or else someone .................................................... (hear) us. 2. I won’t go on holiday unless you .................................................... (come) with me. 3. If you ......................................... (talk) less, you would be able to concentrate on your work. 4. If the food ............................................. (not / be) so good, we wouldn’t have eaten so much. 5. Even if I ........................................... (phone) them, it would have been too late to change their minds. 6. Unemployment will decrease provided the government ................................................. (take) appropriate measures. 7. I ............................................ (speak) to her if she apologised for her appalling behaviour. 8. What .................................................... (he/say) if you told him the truth? 9. If you watch this film, you .................................................... (get) an idea of how difficult life is for these tribes. 10. If you ............................. (cancel) within the time limit, we would have given you a full refund. 11. If she had realised how late it was, she .................................................... (not/ring) us. 12. We could have some fresh air if you .............................................. (open) the window.

Một hình chữ nhật có chu vi gấp 6 lần chiều rộng. Tính diện tích hình chữ nhật, biết chu vi đó là 48 cm.

Giải các pt sau; a) 2x ( x - 5 ) - 4 ( 5 - x ) = 0. b)| x - 3 |= - 3x + 17.

Cho tam giác nhọn ABC nội tiếp đường tròn (O). Tiếp tuyến tại B và tại C của đường tròn cắt nhau tại D.gọi H là trực tâm của tam giác ABC M là trug điểm cạnh BC CM AH= 20M

Cho hình lập phương ABCD.A’B’C’D’ có M,N,Q lần lượt là trung điểm BC,CD,A’O. Biết O là giao điểm của AC với BD. Tìm thiết diện của (MNQ) với hình lập phương.

Rewrite these sentences with the given words. Do not change the meaning.

Chứng minh 0,(123) + 0,(879)=1 Làm nhanh giùm ạ!