87. (7 – b)(7 – b)=49-14b+b^2
88. (a + 8)(a + 8)=a^2+16a+64
89. (-а – s)²=a^2+2as+s^2
90. (-а – k)²=a^2+2ak+k^2
91. (-а + t)²=a^2-2at+t^2
92. (-а – d)²=a^2+2ad+d^2
93. (-а + z)²=a^2-2az+z^2
94. (-а – q)²=a^2+2aq+q^2
95. (-s – х)²=s^2+2sx+x^2
96. (-a – х)²=a^2+2ax+x^2
97. (-h + х)²=h^2-2hx+x^2
98. (-v – х)²=v^2+2vx+x^2
99. (-f + х)²=f^2-2fx+x^2
100. (-d – х)²=d^2+2dx+x^2
^-это степень