03-06-2016
Mathematics

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Use the discriminant to find the number of real roots in Y = x^2 – 6x + 9

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whiskeyo whiskeyo

03-06-2016

So discriminant is being counted from that equation:
b^2-4ac = 36-36 = 0

As discriminant is 0, then there is just 1 root -> -b/2a = 6/2 = 3.

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