import java.util.*;    
import java.io.*;    
import java.math.*;
import java.text.*; 
public class Main{    
    public static void main(String args[]){    
        Scanner cin = new Scanner(new BufferedInputStream(System.in));
        int T = cin.nextInt();
        while(T>0){
            T=T-1;
            int n=cin.nextInt();
            BigInteger[] a = new BigInteger[n+2];
            for(int i=1;i<=n;i++){
                a[i]=cin.nextBigInteger();
            }
            int c=0;
            for(int i=2;i<n;i++){
                if(a[i].multiply(a[i]).compareTo(a[i-1].multiply(a[i+1]))!=0){
                    c=1;
                }
            }
            if(c==0){
                int d=0;
                for(int i=1;i<=n;i++){
                    if(a[i].compareTo(BigInteger.valueOf(0))==0){
                        d=1;
                    }
                }
                if(d==0) System.out.println("Yes");
                else{
                    d=0;
                    for(int i=1;i<=n;i++){
                        if(a[i].compareTo(BigInteger.valueOf(0))!=0){
                            d=1;
                        }
                    }
                    if(d==0) System.out.println("Yes");
                    else System.out.println("No");
                }
            }
            else System.out.println("No");
        }  
    }  
}