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#include <iostream>
#include <complex>
 
int main()
{
    std::complex<double> a = 3.0;
    std::complex<double> b = 2.0;
    std::complex<double> c = 1.0;
 
    std::complex<double> d = sqrt(pow(b,2)- 4.0*a*c);
    std::complex<double> r1 = (-b + d)/(2.0*a);
    std::complex<double> r2 = (-b - d)/(2.0*a);
    std::cout << "The answers are " << std::showpos << '\n'
              << r1.real() << " " <<  r1.imag() << "i\n"
              << r2.real() << " " << r2.imag() << "i\n";
}
 

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• # 4:   hide show   clone   input   91 days 11 hours ago    Success

  result: Success     time: 0s    memory: 2852 kB     returned value: 0

  input:

  1234567891011121314 #include <iostream>
  #include <complex>
  
  int main()
  {
      std::complex<double> a = 3.0;
      std::complex<double> b = 2.0;
      std::complex<double> c = 1.0;
  
      std::complex<double> d = sqrt(pow(b,2)- 4.0*a*c);
      std::cout << "The answers are "
                << (-b + d)/(2.0*a) << " and " 
                << (-b - d)/(2.0*a) << '\n';
   

  output:

  The answers are 
  -0.333333 +0.471405i
  -0.333333 -0.471405i
  
• # 3:   hide show   clone   input   91 days 11 hours ago    Success

  result: Success     time: 0s    memory: 2852 kB     returned value: 0

  input:

  #include <iostream>
  #include <complex>
   
  int main()
  {
      std::complex<double> a = 3.0;
      std::complex<double> b = 2.0;
      std::complex<double> c = 1.0;
   
      std::complex<double> d = sqrt(pow(b,2)- 4.0*a*c);
      std::complex<double> r1 = (-b + d)/(2.0*a);
      std::complex<double> r2 = (-b - d)/(2.0*a);
      std::cout << "The answers are " << std::showpos << '\n'
                << r1.real() << " " <<  r1.imag() << "i\n"
                << r2.real() << " " << r2.imag() << "i\n";
  }
  #include <iostream>
  #include <complex>
   
  int main()
  {
      std::complex<double> a = 0;
      std::complex<double> b = 0;
      std::complex<double> c = 0;
   
      std::complex<double> d = sqrt(pow(b,2)- 4.0*a*c);
      std::complex<double> r1 = (-b + d)/(2.0*a);
      std::complex<double> r2 = (-b - d)/(2.0*a);
      std::cout << "The answers are " << std::showpos << '\n'
                << r1.real() << " " <<  r1.imag() << "i\n"
                << r2.real() << " " << r2.imag() << "i\n";
  }
  

  output:

  The answers are 
  -0.333333 +0.471405i
  -0.333333 -0.471405i
  
• # 2:   hide show   clone   input   91 days 11 hours ago    Success

  result: Success     time: 0s    memory: 2852 kB     returned value: 0

  input:

  #include <iostream>
  #include <complex>
   
  int main()
  {
      std::complex<double> a = 1.0;
      std::complex<double> b = -8.0;
      std::complex<double> c = 16.0;
   
      std::complex<double> d = sqrt(pow(b,2)- 4.0*a*c);
      std::complex<double> r1 = (-b + d)/(2.0*a);
      std::complex<double> r2 = (-b - d)/(2.0*a);
      std::cout << "The answers are " << std::showpos << '\n'
                << r1.real() << " " <<  r1.imag() << "i\n"
                << r2.real() << " " << r2.imag() << "i\n";
  }
  

  output:

  The answers are 
  -0.333333 +0.471405i
  -0.333333 -0.471405i
  
• # 1:   hide show   clone   input   195 days 8 hours ago    Success

  result: Success     time: 0.02s    memory: 2724 kB     returned value: 0

  input: no
  output:

  The answers are 
  -0.333333 +0.471405i
  -0.333333 -0.471405i