# Which of the following equations have only one solution? Select all correct answers.x²-x-6=05 x2 + 20 x+ 20 = 09x2 - 25 = 04x2+4 x=012+

###### Question:

Which of the following equations have only one solution? Select all correct answers. x²-x-6=0
5 x2 + 20 x+ 20 = 0
9x2 - 25 = 0
4x2+4 x=0
12+ 6 x+9= 0​

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