import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.util.StringTokenizer;
import java.math.BigInteger;
import java.util.Collections;
import java.util.Arrays;

public class Main {
    private static StringTokenizer tokenizer;
    private static BufferedReader bf;
    private static PrintWriter out;
    
    private static int nextInt() throws IOException {
        return Integer.parseInt(nextToken());
    }
 
    private static String nextToken() throws IOException {
        while(tokenizer == null || !tokenizer.hasMoreTokens()) {
            tokenizer = new StringTokenizer(bf.readLine());
        }
        return tokenizer.nextToken();
    }
    
    public static void main(String[] args) throws IOException {
        bf = new BufferedReader(new InputStreamReader(System.in));
        tokenizer = null;
        out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out)));
        
        int ntest = nextInt();
        
        while (ntest-- > 0) {
            int n = nextInt();
            BigInteger[] a = new BigInteger[n];
            int zero = 0;
            for (int i = 0; i < n; ++i) {
                a[i] = new BigInteger(nextToken());
                if (a[i].equals(BigInteger.ZERO)) zero++;
            }
            if (n == 1) out.println("Yes");
            else {
                if (zero > 0 && zero < n) {
                    out.println("No");
                }
                else {
                    boolean bad = false;
                    for (int i = 1; i < n - 1; ++i) {
                        BigInteger x = a[i - 1].multiply(a[i + 1]);
                        BigInteger y = a[i].multiply(a[i]);
                        if (!x.equals(y)) {
                            bad = true; break;
                        }
                    }
                    if (bad) out.println("No");
                    else out.println("Yes");
                }
            }
        }
        out.close();
    }
}