#### Answer

$$(y-5)^{2}$$

#### Work Step by Step

Factor
$$y^{2}−10y+25.$$
Find numbers that are factors of $25$ and sum to $-10$:
$$(-5)(-5)=25;\space -5-5=-10.$$
The polynomial is a product of two binomials:
$$y^{2}−10y+25=(y-5)(y-5)=(y-5)^{2}.$$

Published by
Prentice Hall

ISBN 10:
0133186024

ISBN 13:
978-0-13318-602-4

$$(y-5)^{2}$$

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.