Evaluate the function at the given value of the independent variable and simplify.
f(x) = x2 -
1; f(x - 2)
here we can write:
f(x-2) = (x-2)^2 -1 = x^2 + 4 -4x -1=
= x^2 - 4x +3
f(x-2) = x^2 - 4x +3
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