Viết chương trình giải phương trình ax2+bx+c=0 ( a<>0 ) giúp dùm mình cần gấp sáng nay lúc 7h45 giúp dùm mình Bài 9: Cấu trúc rẽ nhánh

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Program baitap;

Uses crt;

Var d,x1,x2,a,b,c : real;

Begin

Clrscr;

Write('a='); Readln(a);

Write('b='); Readln(b);

Write('c='); Readln(c);

d:=b*b-4*a*c;

If d>0 then

     Begin

     x1:=(-b+sqrt(d))/(2*a);

     x2:=(-b-sqrt(d))/(2*a);

     Writeln('2 nghiem PT la: ',x1:0:2,' va: ',x2:0:2);

     End

Else if d=0 then

               Begin

               x1:=(-b)/(2*a);

               Writeln('PT co nghiem kep la: ',x1:0:2);

               End

Else Writeln('Phuong trinh vo nghiem');

Readln;

End.

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giup e voi I/ Supply the correct form of the verbs in brackets 1. You (think) ……………………… collecting stamps costs much money? 2. Every year, my mother (give) ……………………… me a nice doll on my birthday. 3. Jenny says she loves collecting pens but she (not/continue) ……………………… this hobby from next year. 4. If you wash your hands more, you (have)……………………. less chance of catching flu. 5. Getting plenty of rest is very good. It (help)…………………. you to avoid depression. 6. Mr. John (be) ……………………… principal of our school since last year. 7. I (see) ……………………… a car accident on this corner yesterday. 8. We like (come)……………………to school by bus, but we hate (stand)………………………. and (wait) …………………… in the rain. 9. ……………………… (you/ ever/ meet) anyone famous? 10. My mother (come) ……………………… to stay with us next weekend. 11. When he lived in Manchester, he (work) ……………………… in a bank. 12. We (be) ……………………… students for four years. 13. We are planting trees around our school now. Our school (be) ……………………… surrounded by a lot of green trees. 14. What ……………………… your father usually ……………………… (do) in the evenings? 15. My sister likes (cook) ……………………… very much. She can cook many good foods. 16. My father says when he's retired, he (go) …………………… back to his village to do the gardening. 17. They want (buy) ……………………… some meat for dinner. 18. Linh is my best friend. We (know) ……………………… each other for 5 years. 19. I enjoy (fish) ……………………… because it is relaxing. 20. How about (go) ……………………… to the movie theatre?

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