105. {−1, 2−7–√, 3, 2+7–√}{−1, 2−7, 3, 2+7}
107. {2}{2}
109. {−7,−2}{−7,−2}
111. {−3,−53}{−3,−53}
113. {±33–√, ±1}{±33, ±1}
115. {−5b, 2b}{−5b, 2b}