105. −1(3x+4)2−1(3x+4)2
106. −x2−1(x2+1)2−x2−1(x2+1)2
107. −4(x+1)(x−1)2−4(x+1)(x−1)2
108. 5(3x+1)25(3x+1)2
109. x
110. y+xy+x
111. 2a22a2
112. yxyx
113. x41−x8x41−x8
114. x