So sánh (không dùng số hay máy tính bỏ túi)

          \(\sqrt{2003}+\sqrt{2005}\) và \(2\sqrt{2004}\).

Tìm x:h,\(\sqrt{x+1}+\sqrt{x+6}=5\)

Tính:a, \(\sqrt{x^2+5x+4}=20\)

Tìm x:e,\(\sqrt{4\left(1-x\right)^2}-\sqrt{3}=0\)

Tính:h,C=\(\left(\dfrac{\sqrt{3}+1}{\sqrt{3}-1}-\dfrac{\sqrt{3}-1}{\sqrt{3}+1}\right):\sqrt{48}\)

Complete the sentences with the past simple, past progressive or past perfect form of the verbs in brackets. 1. Matt Answer (live) in Greece for two years before he _________(move) to Italy. 2. The patient______________ (die) while the doctors ___________ (perform) the operation. 3. I __________ (be) happy to see Matha because we __________ (not see) each other since last Christmas. 4. Mary__________ (clean) the windscreen when she __________(notice) a crack in the glass. - crack (n) vết nứt 5. By the time Alex________ (finish) his studies, he _______ (be) in London for over eight years. By the time (tính đến lúc) ..... (QK Đơn) , QK HT (had + PP) 6. As I ____________ (cross) the street, I ___________ (catch) sight of an old friend of mine in a restaurant. 7. The hotel was full, so I __________ (be) glad that we________ (book) in advance. - book ... in advance: đặt trước 8. As soon as the people ___________ (hear) the trumpet blast, they ________(shout) a loud war cry. 9. What __________ (you/read) when I __________ (interrupt) you last night? 10. I __________ (want) to help with the washing up, but Sandra _________(already/ do) it. 11. They ________ (watch) a film in the cinema so they ___________ (not realise) it __________ (snow) outside. 12. First I _________ (tidy) the flat, then I ________ (sit) down and ___________(have) a cup of coffee. 13. __________ (you/ ever/ visit) London when you _________ (live) in England? 14. The neighbors ___________will (call) the fire department when they __________are (see) the old house go up in flames. 15. Nobody__________ (come) to the meeting because Angela __________(forget) to tell them about it.

Cần gấp mai kiểm tra!!!

Giải giúp vs ạ mk cần gấp lắm!!!!!