Mathematics for IGCSE & O level - Graphs Of Functions (Section 3 - No. 1)
Which statement is true about the nature of the solutions (roots) of a quadratic equation if its graph does not intersect the x-axis?
The equation has two real roots.
The equation has one real root.
The equation has no real roots.
The equation has three real roots.
Explanation
If the graph doesn't intersect the x-axis, there are no real roots.
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