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Zero-point problem-solving skills of a compulsory function in senior one mathematics.
The point where Y=0 is the root of the function, and the zeros of the quadratic function are x 1 and x2.

Let the quadratic function y = ax 2+bx+c = 0.

Then x1* x2 = c.

x 1+x2=-b,

There is an extreme value between x 1 and x2, which is the minimum value when a is positive and the maximum value when a is positive.