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6 August, 00:12

18x2 + 4 - [6 (x2 - 2) + 5]

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  1. 6 August, 01:13
    0
    12X^2+11

    Step-by-step explanation:

    18X^2+4-[6 (X^2-2) + 5]

    18X^2+4-[6X^2-12+5]

    18X^2+4-6X^2-7

    18X^2-6X^2+7+4

    12X^2+11
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