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how are the zeros of polynomial functions useful in graphing them

Sagot :

Answer:By the Fundamental Theorem of Algebra, a polynomial of degree n will have exactly n complex zeros. If the coefficients of that polynomial are all real (as is the case of the polynomials being discussed here), then, any non-real complex zeros of the polynomial must occur in conjugate pairs.

For example, a polynomial of degree 7 will have either 0,2,4, or 6 non-real zeros, which means it will have 7,5,3, or 1 real zeros.

Answer:

A zero or root of a polynomial function is the value of x such that f(x) = 0.

In other words it is the x-intercept, where the functional value or y is equal to 0.