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The given function is expressed as
f(x) = - x³ + 6x - 7
At x = 2, it means that we would find f(2) by substituting x = 2 into the function. It becomes
f(2) = - 2^3 + 6 * 2 - 7
f(2) = - 8 + 12 - 7
f(2) = - 3