17) Absolute maximum at \(x=4,\) absolute minimum at \(x=−1,\) local maximum at \(x=−2,\) and a critical point that is not a maximum or minimum at \(x=2\) 18) Absolute maxima at \(x=2\) and \(x=−3\), ...17) Absolute maximum at \(x=4,\) absolute minimum at \(x=−1,\) local maximum at \(x=−2,\) and a critical point that is not a maximum or minimum at \(x=2\) 18) Absolute maxima at \(x=2\) and \(x=−3\), local minimum at \(x=1\), and absolute minimum at \(x=4\) Absolute minimum: \(x=−3, y=−135;\) local maximum: \(x=0, y=0\); local minimum: \(x=1, y=−7\) Absolute minima: \(x=0, x=2, y=1\); local maximum at \(x=1, y=2\)