Answer
$(4y-1)^2$
Work Step by Step
For the polynomial
$$
16y^2 -8y +1
$$
one can see that this is a perfect square. We use the perfect square factoring formula:
$(a-b)^2=a^2-2ab+b^2$
That is
$$
16y^2 -8y +1=(4y-1)^2
.$$
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.