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Find all values of m so that the quadratic x^2 - mx + m - 1 = 0 has only one solution.

 Jun 9, 2020
 #1
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The discriminant portion of the quadratic formula = 0 for just one answer

b^2 - 4ac = 0       a = 1    b = -m     c = (m-1)

 

m^2 - 4 ( 1)(m-1) = 0

m^2 - 4m + 4 = 0                                quadratic formula shows m = 2

 Jun 9, 2020

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