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What is the Value of f(7)?
Consider the following polynomial functions.
F(x) = (x-7) (x-8) (x+9)
5 Answers
- ?Lv 61 year ago
f(x) = (x-7) (x-8) (x+9)
x = 7, 8, -9 are roots of the given equation
f (7) = (7-7) (7-8) (7+9)
f(7) = 0
Source(s): http://myrank.co.in/ - 1 year ago
f(x) means what do you get when you plug in x for the function. All the x's stay the same. f(7) means to change all the x to 7. since you have 3 quantities multiplied together, we see that when you plug in 7 you will get (7-7) or 0 and 0 times anythign is 0 so f(7) is 0.
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