he factor tree for 1,764 is shown.
What is the simplest form of ?
32(72)
22(32)(72)
21
42

We are given number 1,764.
And a factor tree of 1,764 is show in the diagram.
First 1764 is factored into 2 and 882.
Then 882 is factored to 2 and 441.
441 is factored to 9 and 49.
And finally 9 is factored to 3 and 3.
49 is factored to 7 and 7.
So final factors we got 3 × 3 × 7 × 7.
3 × 3 could be written as 3^2 and
7 × 7 = could be written as 7^2.