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If the vertex of the parabola \mathrm{y=x^{2}-8 x+c}  lies on x-axis ,then the value of \mathrm{c} is

Option: 1

-16


Option: 2

-4


Option: 3

16


Option: 4

4


Answers (1)

best_answer

The parabola is \mathrm{y=(x-4)^{2}+c-16}. So the vertex is \mathrm{(4, c-16)}. As vertex is on x-axis, \mathrm{\mathrm{c}=16}.

Hence (C) is the correct answer.

Posted by

HARSH KANKARIA

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