viết phương trình nhập vào giá trị của 3 hệ số a b c của phương trình bậc hai sau đó suất ra kết quả của phương trình bậc hai với các số a b c có nghiệm hay vô nghiệm.giải giúp em với mọi người ơi

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bn xem đc ko

Program GIAI_PHUONG_TRINH_BAC_HAI;
Uses crt;
Var a,b,c,d,x,x1,x2:real;
Begin
Writeln('GIAI PHUONG TRINH BAC II:');
Write('Nhap he so a=');readln(a);
Write('Nhap he so b=');readln(b);
Write('Nhap he so c=');readln(c);
If a=0 then
   If b=0 then
       If c=0 then
Writeln('Phuong trinh co vo so nghiem')
       Else
Writeln('Phuong trinh vo nghiem')
   Else
Writeln('Phuong trinh co mot nghiem: x=',-c/b:4:2)
Else
Begin
d:=b*b-4*a*c;
If d=0 then
Writeln('Phuong trinh co nghiem kep: x=',-b/(2*a):4:2)
Else
If d<0 then
Writeln('Phuong trinh vo nghiem')
Else
Begin
x1:= (-b+sqrt(d))/(2*a);
x2:= (-b-sqrt(d))/(2*a);
Write('Phuong trinh co hai nghiem: ‘);
Writeln(‘ x1=',x1:4:2,' va x2=',x2:4:2);
End;
End;
Readln;
End.

uses crt;

var a, b, c, dt : real;

begin

clrscr;

write('nhap he so a, b, c :'); readln(a, b, c);

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

if a <> 0 then

begin

if dt >0 then

begin

writeln('nghiem x1 =', ((- b + sqrt(dt))/(2 * a)):2:2);

writeln('nghiem x2 =', ((- b - sqrt(dt))/(2 * a)):2:2);

end

else

if dt = 0 then writeln('x = ', (-b / (2 * a)):2:2)

else writeln('Phương trinh vo nghiem');

end;

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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