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Leto [7]
2 years ago
5

If f is a polynomial function and xminus−5 is a factor of​ f, then ​f(5)equals=​_______.

Mathematics
2 answers:
sp2606 [1]2 years ago
8 0

if (x - 5 ) is a factor of f(x ) then x = 5 is a root of f(x) and f(5) = 0


gogolik [260]2 years ago
5 0

Answer:

f(5) = 0

Step-by-step explanation:

A function f can be simplified by it's roots.

For example, a second order function expressed by the following equation:

ax^{2} + bx + c, a\neq0.

Can be expressed in function of it's roots x_{1}, x_{2} such that ax^{2} + bx + c = (x - x_{1})*(x - x_{2}).

Is x-5 is a factor of f, this means that f can be expressed in function of x - 5, that is, x = 5 is a root of the equation.

This means that:

f(5) = 0

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