Syntax error on token "eqn" delete this token

I am fairly new to Java and taking a course but cannot figure out this small syntax error that I keep on getting. I have been researching and staring at the problem for a while now and just cannot figure it out. I am not asking for someone to complete the project just need help with this 1 error. Sorry if I am not posting in the right section. Below is the code....

import java.util.*;
public class SolveEqu {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
double arr[]=new double[3];  //passing array as parameter
System.out.println("Enter the three coefficients of the equation separated by spaces");
for(int i=0;i<3;i++)
arr[i]=sc.nextDouble();     
double result[]=solveQuadratic(arr); // unknown   
//if result is negative
if(result.length==1) {                 
System.out.println("The equation has no real roots");
}
//if result is = to zero
else if(result.length==2) {      
System.out.println(" The equation has just one real root");
System.out.format("The root is %.2f",result[1]);
}
//if result is positive
else                               
{
System.out.println("The equation has two real roots");
System.out.format("The root are %.2f and %.2f",result[1],result[2]);    
}
}
public static double[] solveQuadratic(double[] eqn) {  // method heading from assignment
double discriminant=eqn[1]eqn[1]-(4eqn[0]eqn[2]);  // discriminant of the quadratic equation
if(discriminant>0) {                  //   discriminant is positive and has 2 real roots       
double r1=(-eqn[1]+Math.sqrt(discriminant))/(2eqn[0]);   // equation for square roots
double r2=(-eqn[1]-Math.sqrt(discriminant))/(2eqn[0]);	//equation for square roots
double res[]= {2,r1,r2};      
return res;
}
else if(discriminant==0)  //equal to zero the equation has just one real root          
{
double r1=(-eqn[1])/(2eqn[0]);  
double res[]= {1,r1};             
return res;
}
else     //   the equation has no real roots 
{
double res[]= {0};    //unknown  
return res;    //unknown 
}
}
}

The line that is causing me trouble and throwing errors on is the following ...

double discriminant=eqn[1]eqn[1]-(4eqn[0]eqn[2]);

It says "Invalid float literal number" and "Syntax error on taken "eqn", delete this token"

Could someone help explain what this error means?

The comment by @f1sh was the first of multiple examples of the same problem.

As pointed out, you needed a multiplication operator for eqn[1]*eqn[1].

For 4eqn[0]eqn[2], the same applies. If I remember my quadratics, you are trying to multiply there, so you need 4*eqn[0]*eqn[2]. The line should read:

double discriminant=eqn[1]*eqn[1]-(4*eqn[0]*eqn[2]);

Similarly, in your calculation for r1 and r2, 2eqn[0] should be 2*eqn[0]. That fix is needed in both places you calculate r1.

So, the basic rule is that, in java, you must specify the operator between two symbols. Unlike in math, writing them next to one another does not imply multiplication.