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Factorise:
$ab(x^2+y^2)-xy(a^2+b^2)$
Given:
The given expression is $ab(x^2+y^2)-xy(a^2+b^2)$.
To do:
We have to factorise the given expression.
Solution:
$ab(x^2+y^2)-xy(a^2+b^2)=abx^2+aby^2-a^2xy-b^2xy$
$=abx^2-b^2xy+aby^2-a^2xy$
$=bx(ax-by)-ay(ax-by)$
$=(ax-by)(bx-ay)$
Therefore,
Factors of $ab(x^2+y^2)-xy(a^2+b^2)$ are $(ax-by)$ and $(bx-ay)$.
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