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28 May, 16:57

Is (-4x+9) squared a perfect square

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  1. 28 May, 20:08
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    + 6x + 9 ... so x2 + 6x + 9 is a perfect square trinomial ... The first term, 16x2, is the square of 4x, and the last term, 36, is the square of 6. (4x) 2 - 48x + 62.
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