The number which when substituted in a polynomial makes its value zero is called the zero of the polynomial.
The zero of a polynomial can be defined as the points where the polynomial becomes zero as a whole.
In other words, The zeros of a polynomial p(x) are the values of x which satisfy the equation p(x) = 0
For example, the zero of the polynomial f(x) = x³- 12x²+ 20x is x = 0 or x = 10 or x = 2.
This is because f(x) = o when we substitute those x values.
Therefore, the number which when substituted in a polynomial makes its value zero is called the zero of the polynomial.
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