Question

how to find out the cuberoo of any number

Answer 1

to find the cube root of a number, you want to find some number that when multiplied by itself twice gives you the original number. In other words, to find the cube root of 8, you want to find the number that when multiplied by itself twice gives you 8. The cube root of 8, then, is 2, because 2 × 2 × 2 = 8. Notice that the symbol for cube root is the radical sign with a small three (called the index) above and to the left 
Other roots are defined similarly and identified by the index given. (In square root, an index of two is understood and usually not written.)



( it's from my book )