lyssam2000 lyssam2000

03-04-2017
Mathematics

contestada

Which of the following equations has only one solution?

x^2 = 9
x(x - 1) = 9
x^2 - 6x + 9 = 0

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BodaciousT BodaciousT

03-04-2017

The third one only has one solution and the first one has two which is 3,-3
the second one has two
So the answer is C

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