factorise (x^2+y^2-z^2)^2 - 4x^2y^2
spatelhaspura6:
please give me answer
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it is right answer like it
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x^2+y^2-z^2)^2 - 4x^2y^2
( [ (x^2 + y^2 - z^2 ] + 2xy ) ( [ x^2 + y^2 -z^2] - 2xy )
( [ x^2 + 2xy + y^2 ] - z^2 ) ( [ x^2 - 2xy + y^2] - z^2 )
( ( x + y)^2 - z^2 ) ( ( x - y)^2 - z^2 )
( (x + y) + z ) ( (x + y ) - z ) ( (x - y) + z) ( ( x - y) - z )
( x + y + z ) ( x + y - z) ( x - y + z ) ( x - y - z )
I can't understand
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