Question

Two-fifths of the square of a number j

Answer 1

`(2)/(5)j^(2)`

Explanation:

Let

j ------> the number

we know that

The square of a number is equal to multiply the number by itself

so

The square of j is

`j*j=j^(2)`

so

Two-fifths of the square of a number j is the same that multiply the fraction 2/5 by the square of j

`(2)/(5)j^(2)`