Giúp mình bài này với ạ:1. A = ( x- 2)2 + ( x + 3)2 – 2( x +1)(x- 1)2. B= ( 2x-1)2 + 2( 2x-1)(x +1) +( x+1)23. C = ( x-y)(x +y)( x2 +y2)(x4+ y4)(x8 +y8)4. D = 3(x – y)2 – 2(x + y)2 – ( x – y)(x +y)5. E = ( x-1)2 -2( x -1)( x-3) + (x -3)26. F = ( 2x + 3)2 + (2x + 3)(2x -6) + ( x-3)27. G = ( x2 + x + 1)(x2 – x+1)( x4 – x2 +1)( x8 – x4 +1)8. H = ( x -1 )3 +(x +1)39. I = (x2 – 2x + 4)(x + 2) – (x – 2)3 – 6(x -1)(x +...
Đọc tiếp
Giúp mình bài này với ạ:
1. A = ( x- 2)2 + ( x + 3)2 – 2( x +1)(x- 1)
2. B= ( 2x-1)2 + 2( 2x-1)(x +1) +( x+1)2
3. C = ( x-y)(x +y)( x2 +y2)(x4+ y4)(x8 +y8)
4. D = 3(x – y)2 – 2(x + y)2 – ( x – y)(x +y)
5. E = ( x-1)2 -2( x -1)( x-3) + (x -3)2
6. F = ( 2x + 3)2 + (2x + 3)(2x -6) + ( x-3)2
7. G = ( x2 + x + 1)(x2 – x+1)( x4 – x2 +1)( x8 – x4 +1)
8. H = ( x -1 )3 +(x +1)3
9. I = (x2 – 2x + 4)(x + 2) – (x – 2)3 – 6(x -1)(x + 1)
10. J = (x -2)(x +2)(x2 +4) – ( x2 – 3)(x2 +3)
11. K = ( a +b +c)2 +( b+c –a)2 +( c+ a-b)2 +( a+b –c)2
12. L = ( x-2)3 - (x + 1)(x2 – x + 1) + 6(x -1)2
13. M = ( x + 1) 4 – 6(x + 1)2 –(x2 – 2)( x2 + 2)
