factorise xy (a²+ b²)-ab (x²+y²)
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Answer:
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Answer:
(bx-ay)(ax-by)
Step-by-step explanation:
abx²+aby²-a²xy-b²xy
abx²-a²xy + aby² - b²xy
ax(bx-ay) - by( -ay + bx)
(bx-ay)(ax-by)
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