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what is the gcf of 54 and 90

Sagot :

The greatest common factor of 54 and 90 is 18
The prime factorization of 54 is 2 * [tex] 3^{3} [/tex]
The prime factorization of 90 is 2 * [tex] 3^{2} [/tex] * 5
What do they have in common? 2 * 3², which is 18.