Содержание
- 2. а) c; -4; 3m; 5x2y б) 3x и 6y в) a+b; a2+b2(а+b)2; г) (x+6)•(x-5) x-y; (x-y)2;
- 3. 1)(m+n)•(m+n) (m+n) 2)(c+d)•(c+d) (c+d) 3)(x+y)•(x+y) (x+y) 4)(p+g)•(p+g) (p+g) 5)(k+f)•(k+f) (k+f) 6)(8+m)•(8+m) (8+m) 7)(n+5)•(n+5) (n+5) 8)(2+c)•(2+c) (2+c)
- 4. (a+b)2=a2+2ab+b2 (a-b)2=
- 5. 1) (3x+5)2= 2) (2y-8)2=
- 6. a)(c+11)2;б)(7y+6)2;в)(9-8k)2;г)(3m-4)2 1 2 3 c2+11c+121 c2-22c+121 c2+22c+121 49y2+42y+36 49y2+84y+36 49y2-84y+36 81-144k+64k2 81-72k+64k2 81+144k+k2 9m2+24m+16 9m2-24m+16 9m2-12m+16
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