[tex]ax^2 + ay^2 -bx^2 -by^2 + b - a = \left(x^2+y^2-1\right)\left(a-b\right)[/tex]
Solution:
Given that,
[tex]ax^2 + ay^2 -bx^2 -by^2 + b - a[/tex]
We have to write the above expression as product
From given,
[tex]ax^2 + ay^2 -bx^2 -by^2 + b - a[/tex]
[tex]\mathrm{Factor\:out\:common\:term\:}a\\\\a\left(x^2+y^2-1\right)-bx^2-by^2+b\\\\\mathrm{Factor\:out\:common\:term\:}b\\\\a\left(x^2+y^2-1\right)+b\left(-x^2-y^2+1\right)\\\\\mathrm{Rewrite\:as}\\\\\left(x^2+y^2-1\right)a-\left(x^2+y^2-1\right)b\\\\\mathrm{Factor\:out\:common\:term\:}\left(x^2+y^2-1\right)\\\\\left(x^2+y^2-1\right)\left(a-b\right)[/tex]
Thus the given expression is written as product
