Question 692928
f(x) = -x^2 + x + 1


f(a - 2) = -(a - 2)^2 + (a - 2) + 1


f(a - 2) = -(a^2 - 4a + 4) + (a - 2) + 1


f(a - 2) = -a^2 + 4a - 4 + a - 2 + 1


f(a - 2) = -a^2 + 5a - 5


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Answer: f(a - 2) = -a^2 + 5a - 5


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