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The real solutions are the points at which the graph of the function crosses the x-axis. If the graph never crosses the x-axis, then the solutions are imaginary.
x = 0
It can be casually called the x intercept, but it/they is/are the root(s) of the function represented by the graph
Where a line crosses the y an x axis on a graph.
y=x2-4x+4 y = (x-2)(x-2) x=2 the graph only crosses the x-axis at positive 2. this is the minimum of the graph and the only point that is crosses the x-axis.