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24 October, 23:39

Find the value of the expression (4x-12) + (12xy-10) (4x-12) + (12xy-10) for x=4 and y=6

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  1. 25 October, 03:11
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    (4x-12) + (12xy-10) (4x-12) + (12xy-10) = 4x-12 + 12.4. x. x. y - 12.12. xy - 10.4. x + 10.12 + 12xy - 10

    = 4x - 10 + 48 (x^2) y - 144xy - 40x + 120 + 12xy - 10

    = 48yx^2 + 4x - 40x - 144xy + 12xy - 10+120-10

    = 48yx^2 - 36x - 132xy + 100

    For x = 4 and y = 6

    (4x-12) + (12xy-10) (4x-12) + (12xy-10) = 48yx^2 - 36x - 132xy + 100

    = 48.6. (4^2) - 36.4 - 132.4.6 + 100

    = 4608 - 144 - 3168 + 100

    = 1396
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