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Mathematics

Factorise:

x2y2 - 12xy - 45

Factorisation

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Answer

Given,

⇒ x2y2 - 12xy - 45

⇒ (xy)2 - 12xy - 45

⇒ (xy)2 - 15xy + 3xy - 45

⇒ xy(xy - 15) + 3(xy - 15)

⇒ (xy + 3)(xy - 15).

Hence, x2y2 - 12xy - 45 = (xy + 3)(xy - 15).

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