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The graph of a quadratic function crosses the x-axis twice. Check all of the following that could possibly be the value for the discriminant.

A. -7
B. 14
C. 36
D. 0

Respuesta :

if discriminant is negative, the graph does not touch x-axis,
if discriminant =0 then graph only touches x-axis one time,
if discriminant is positive then graph crosses x-axis in 2 points,
so the answers are B) 14 and D) 36

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