Answer :

[tex]2^2 \times 3 \times 5^2[/tex]

To do this, split 300 using a factor tree, and find the prime factors 2,2,3,5 and 5.
ANSWER: 2² x 3 x 5²

EXPLANATION
300 --> 3 x 100
100 --> 2 x 50
50 ---> 2 x 25
25 ---> 55

The prime factors (in bold) are 2 x 2 x 3 x 5 x 5 (which multiply to equal 300)