(с-3)(с+3)
(а-2)(а+2)
(х-4)(х+4)
(d-7)(d+7)
(8-m)(8+m)
(6-p)(6+p)
(0.9-b)(0.9+b)
(0.5-q)(0.5+q)
(0.1-a)(0.1+a)
(y-0.3)(y+0.3)
(k-0.2)(k+0.2)
(x-1.2)(x+1.2)
(3b-2)(3b+2)
(2c-1)(2c+1)
(5m-6)(5m+6)
(7n-9)(7n+9)
(8-4d)(8+4d)
(15-2x)(15+2x)
(12p-3q)(12p+3q)
(7x-0.5y)(7x+0.5y)
(9a-0.6b)(9a+0.6b)
(2p^2-3q)(2p^2+3q)
(10m-9n)(10m+9n)
(0.6c^2-bd)(0.6с^2+bd)