Answer
$(y^2-6)(x^2+5)
$
Work Step by Step
To factor means to convert an expression into expressions that are multiplied. The given expression, $
x^2(y^2-6)+5(y^2-6)
,$ are not expressions that are multiplied. To factor this, factor the common expression, $(y^2-6)$. This results to
\begin{array}{l}\require{cancel}
(y^2-6)(x^2+5)
.\end{array}
