Find the prime factorization of the number

90





We can use factor tree for this 

                              

                               90

                              /  \

                             9 x  10

                            / \   / \

                           3 x3 x 5x2



Therefore the prime factorization of 90 is 3 x 3 x 5 x 2



Notice that 3, 5, and 2 are prime factors. they dont have other factors other than 1 and itself





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