"index" is the singular form - "indices" is the plural :)
The possessive form of "index" is "index's." For example, "the index's values are displayed in alphabetical order."
The plural form of index is indices.
The plural form for the noun index is indexes.
The prime factorization of 49 is 7 x 7. In factor form, this can be written as 7^2, where the exponent indicates the number of times the factor (7) is repeated. Therefore, the factor form repeated of 49 is 7^2.
8890 in standard index form = 8.89 × 103
450 in standard index form = 4.5 × 102
40.000000 in standard index form is 4.0 × 101
Index form of 9765625 is 9.765625 × 106
5,200 in standard index form = 5.2 × 103
49/72 is in its simplest form.
10/49 is in its simplest form.