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19 April, 02:17

Factorise : x^2y^2-16

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  1. 19 April, 02:46
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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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