Answer:
1)Find the prime factorization of 304
304 = 2 × 2 × 2 × 2 × 19
2)Find the prime factorization of 980
980 = 2 × 2 × 5 × 7 × 7
3)To find the GCF, multiply all the prime factors common to both numbers:
Therefore, GCF = 2 × 2
GCF = 4
