algebra
For which values of a do y = x^2 − 2x + a have zero places?
(Sorry if this is translated wrong, it's nollställen in Swedish, which could be zeros.. Quadratic Function maybe?)
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Answers
For the equation y = x^2 − 2x + a to have zero places, the discriminant of the equation, which is b^2 − 4ac, or (−2)^2 − 4(1)(a), must be equal to 0. That is, 4a = 4, so a = 1.
