If the graph of a polynomial intersects the x-axis in 3 points,then its degree cannot be- plz provide detailed explanation.

The real number x=a is a root of the polynomial f(x) if and only if
f(a) = 0

When we see a graph of a polynomial, real roots are x-intercepts of the graph of f(x).
The x-coordinate of the point at which the graph intersects the x-axis is called a zero of the function.
We know a polynomial of degree 2 has two zeros.
A polynomial of degree 3 has three zeros and so on.
Hence
If the graph of a polynomial intersects the x-axis in 3 points,then its degree cannot be 2 because a polynomial of degree 2 has two zeros.