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7 July, 06:31

Which value must be added to the expression x2 - 3x to make it a perfect-square trinomial?

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  1. 7 July, 07:09
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    x2 - 3x

    x^2 - 2. x. (3/2) + 9/4 = (x - 3/2) ^2

    answer: must add 9/4 to the expression x2 - 3x to make it a perfect-square trinomial
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