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OpenStudy (anonymous):
how many times does the graph of y=x^2+1 cross the x-axis?
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OpenStudy (anonymous):
no time
OpenStudy (anonymous):
Grrr
OpenStudy (anonymous):
cross x-axis means, y=0, for this equation ,y will not equal to 0
OpenStudy (anonymous):
The square of a positive number is positive. The square of a negative number is also positive (because the 2 negatives cancel out). And since it is +1, Y will never be less than one, so the line with never cross the X-axis.
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