thu gọn các biểu thức; A=(1/x+ √x) + (2 √x/x-1) -( 1/x- √x)

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EX9. Read and answer the question. FRANK'S ACCIDENT It was on my birthday. My parents gave me a wonderful black bike. It was so cool and I raelly liked it. In the afternoon, I rode my bike throygh the forest and I thought it was the best part of my birthday. I was so happy. Suddenly a rabbit ran across the path. I tried to stop but I was too fast. Too late! I fell oft the bike and landed among some bushes. Ouch! My right leg was hurt, I could't move. I shouted for help but there teas no one nearby. I even didn't have a mobile with me. Then there wre strange noises from behind the trees and I saw aomeone. It was Pluto. He was looking for me. He alled an ambulance and then I was taken to the nearest hospital. It was lucky for me. Now, my foot is in plaster and I can't walk to school. But that's not so bad. 1. What did Franks parents give him as a birthday present? .................................................................................................. 2. Did Franks love that present? ................................................................................................. 3. What did he do in the afternoon? .................................................................................................... 4. What suddenly happend when he was riding his bike? .................................................................................................... 5. Did Frank keep going or try to shop? .................................................................................................. 6. What was the matter with his leg? ................................................................................................. 7. Could he walk or ride? .................................................................................................... 8. Why couldn't he make a phone call? ..................................................................................................... 9. What did Pluto do to help Frank? ........................................................................................................ 10. What's wrong with his foot now? .......................................................................................................