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28 January, 13:36

Which of the following equations have only one solution? Select all correct answers. 4x 2 + 4x = 0 x 2 + 6x + 9 = 0 9x 2 - 25 = 0 5x 2 + 20x + 20 = 0 x 2 - x - 6 = 0

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  1. 28 January, 14:59
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    The equations which have only one solution are: x²+6x+9=0 and 5x²+20x+20=0,
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