factorise : - ab(x² +y²) - xy(a²+b²)
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=abx²+aby²-a²xy-b²xy
=abx²-a²xy + aby² - b²xy
=ax(bx-ay) - by( -ay + bx)
=axbx-axay+byay-bybx
=(bx-ay)(ax-by)
Hope This Helps :)
=abx²-a²xy + aby² - b²xy
=ax(bx-ay) - by( -ay + bx)
=axbx-axay+byay-bybx
=(bx-ay)(ax-by)
Hope This Helps :)
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