First, check to see if the number you are working with is a composite or Prime number, by checking to see if it will divide by anything other than 1 or itself. In this case 98 is not prime, and is indeed a composite number, because it will divide by 2. 98/2 = 49. 49 is an odd, not an even number, so if it divides, it will only divide by odd numbers. First try dividing by 3 (The lowest odd number other than 1), then 5, then 7 etc. In this case, 49 divides by 7. This completes the computation because 7 will not divide, and is already prime. 2 x (7x7) = 98. The prime factors of 98 are 2 and 7.
Use a factor tree. 98 49,2 7,7,2
98 49,2 7,7,2
13 is a prime number. The only prime factor of a prime number is the number itself.
11 and 98 are relatively prime. Their only common factor is 1.
2 x 7 x 7 = 98
Factor trees lead to prime factorizations. Negative numbers don't have prime factorizations. We'll do 98. If you want, you can put -1 in front of it. 98 49,2 7,7,2
Use a factor tree. 98 49,2 7,7,2
For 35, 5 and 7 For 98, 2 and 7
You cannot "solve" a single number!
1, 2, 4, 7, 14, 28, 49, 98, 196 2 and 7 are prime.
Look for common factors, and divide by a common factor, if you find any. In this case, the prime factors of 125 is 5x5x5, so 5 is the only prime factor. Since 5 is not a factor of 98, this can't be simplified.
Use a factor tree. 98 49,2 7,7,2 2 x 7 x 7 = 98