What is the simpler form of the product (5x - 3y^5)^2

The product:
( 5 x - y^5 )² is the squared binomial. The formula for the squared binomial is:
( A - B )² = A²- 2 A B + B²
or:
( A + B )² = A² + 2 A B + B²
In this case:
( 5 x - y^5 )² = ( 5 x )² - 2 · 5 x · y^5 + ( y^5 )² =
= 25 x² - 10 x y^5 + y^10
The simpler form is 25 x² - 10 x y^5 + y^10