Question

Find the HCE using factarization method.
81,117​

Answer 1

Answer:

What is the GCF of 81 and 117?

Find the prime factorization of 81. 81 = 3 × 3 × 3 × 3.

Find the prime factorization of 117. 117 = 3 × 3 × 13.

To find the GCF, multiply all the prime factors common to both numbers: Therefore, GCF = 3 × 3.

GCF = 9.

Answer 2

Answer:

Find the prime factorization of 81

81 = 3 × 3 × 3 × 3

Find the prime factorization of 117

117 = 3 × 3 × 13

To find the HCF, multiply all the prime factors common to both numbers:

Therefore, HCF = 3 × 3

HCF = 9