how many zeroes this parabola have?
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Answer:
This parabola is one unit lower and crosses the X-axis at two points; it has two zeros. If we change C from -1 to plus 1, the parabola is completely above the X-axis, so it has no zeros. If we change the value of A from positive 1 to -1, the parabola will open downward, and it will have two zeros.
Answer:
no zeros because it's touches the axis point
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