factorise x²y²-16xy+39
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Answer:
(xy-13) (xy-3)
Step-by-step explanation:
x^2y^2-16xy+39
=x^2y^2-(13+3)xy+39
=x^2y^2-13xy-3xy+39
=xy(xy-13)-3(xy-13)
=(xy-13) (xy-3)
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