Question

the function f is defined on the real numbers by f(x)=2+x²-x2, what is the value of f(3)​

Answer 1

Answer:

answe will be

f (3)= 2+ 2×2-3×2

= 2+4-6

= 6-6

=0

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Answer 2

$f(x) = 2 + {x}^2 - 2{x}\\ f(x) = 2 + (3)^2 - 2(3)\\ = 2 + 9 - 6\\ = 2 + 3\\ = 5$