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23 March, 20:47

3x^2 + 6 - 2x + 5x - 4x^2 + 9

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  1. 23 March, 21:17
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    3x * 3x = 9x

    9x + 6 - 2x + 5x - 4x^2 + 9

    9x + 6 - 7x - 4x * 4x + 9

    9x + 6 - 7x - 16x + 9

    9x + - 7x = 2x + 6 - 16x + 9

    2x + 6 - 16x + 9

    2x + (-3) - 16x

    -14x + (-3) is the expression?
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