Answer
$x^{175}y^{30}$
Work Step by Step
RECALL:
$\dfrac{a^m}{a^n} = a^{m-n}, a\ne0$
Use the rule above to obtain:
$=x^{200-25} y^{40-10}
\\=x^{175}y^{30}$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.