1) a) 4а^2-4a+1
б) x^2+6xy+9y^2
в) 1/25x^2+1/5xy-1/5xy-y^2= 1/25x^-y^2
2) a) c^2+3c-2c-6-(c^2-2c+1)= c^2+c-6-c^2+2c-1= 3c-7
б) 3(a^2+2ac+c^2)-6ac = 3a^2+6ac+3c^2-6ac = 3a^2+3c^2
в) p^3+3p^2+9p-3p^2-9p-27-p^3 = -27
1) a) 4а^2-4a+1
б) x^2+6xy+9y^2
в) 1/25x^2+1/5xy-1/5xy-y^2= 1/25x^-y^2
2) a) c^2+3c-2c-6-(c^2-2c+1)= c^2+c-6-c^2+2c-1= 3c-7
б) 3(a^2+2ac+c^2)-6ac = 3a^2+6ac+3c^2-6ac = 3a^2+3c^2
в) p^3+3p^2+9p-3p^2-9p-27-p^3 = -27