Answer
$x^4-10x^2y+25y^2$
Work Step by Step
The square of a binomial difference is: $(A-B)^2=A^2-2AB+B^2$.
Hence here: $(x^2-5y)^2=(x^2)^2-2\cdot x^2\cdot5y+(5y)^2=x^4-10x^2y+25y^2$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 5 - Review Exercises - Page 400: 23
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