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9 December, 04:05

Factorise : x^2y^2-16

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  1. 9 December, 05:23
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    (xy - 4) (xy + 4).

    Step-by-step explanation:

    The is the difference of 2 squares.

    a^2 - b^2 = (a - b) (a + b: so we have:

    x^2y^2 - 16 = (xy - 4) (xy + 4)
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