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Lemur [1.5K]
3 years ago
14

F(x)=x^2-x+3 what is f(4)

Mathematics
2 answers:
kondaur [170]3 years ago
8 0

Answer:

15

Step-by-step explanation:

In the function f(x), x is the variable. So, whatever is in the parentheses, replacing x, should replace x throughout the entire function. So, to find f(4) simply plug in 4 for x.

  • First, rewrite the function with 4 as x

f(4) = 4^2 - 4 + 3

  • Next, combine like terms

f(4) = 4^2 - 1

  • Then, raise 4 to the power of 2

f(4) = 16 - 1

  • Finally, subtract

f(4) = 15

Debora [2.8K]3 years ago
4 0

Answer:

f(4) = 15

Step-by-step explanation:

Substitute 4 for x and solve for f(4).

f(x)=x^2-x+3\\f(4)=(4)^2-4+3\\f(4)=16-4+3\\f(4)=15

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