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9 December, 19:15

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

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  1. 9 December, 23:03
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    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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