Expand $(x+5y)(x-5y)$.
(A) To expand the expression $(x+5y)(x-5y)$,we use the algebraic identity $(a+b)(a-b) = a^2 - b^2$.
Here,$a = x$ and $b = 5y$.
Substituting these values into the identity:
$(x+5y)(x-5y) = (x)^2 - (5y)^2$
$= x^2 - 25y^2$.
Here,$a = x$ and $b = 5y$.
Substituting these values into the identity:
$(x+5y)(x-5y) = (x)^2 - (5y)^2$
$= x^2 - 25y^2$.
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