Answer:
[tex]15 \sqrt{7xy} [/tex]
Step-by-step explanation:
[tex] \sqrt{75x7y3} [/tex]
[tex]75x \times 7y \times 3[/tex]
[tex]525xy \times 3[/tex]
[tex] \sqrt{1575xy} [/tex]
[tex] \sqrt{ {15}^{2} \times 7xy} [/tex]
[tex] \sqrt{ {15}^{2} } \sqrt{7xy} [/tex]
[tex] = 15 \sqrt{7xy} [/tex]
