BT-HDT
Bài tập về Hằng Đẳng Thức
02 => 81x2 – 16
03 => (3x – 4)(6x + 1)
04 => 64 + 48x + 9x2
05 => (– 4x + 7)2
06 => 25x2
– 36
07 => (– 2x
+ 5)(6 – 7x)
08 => 16x2 – 72x + 81
09 => (4 – 5x)2
10 => 16 – 9x2
11 => (8x + 9)(7x + 8)
12 => 25x2 – 70x + 49
13 => (6x + 3)2
14 => 16x2
– 252
15 => (3x –
4)(1 + 2x)
16 => 25 – 60x + 36x2
17 => (2x – 7)2
18 => 4 – 9x2
19 => (– 5 + 5x)(6x – 1)
20 => 4x2 – 20x + 25
21 => (2 + 3x)2
22 => 16 – 25x2
23 => (5 + 1x)(2x + 1)
24 => 16x – 56x + 49
25 => (4x – 5)2
26 => 9x2
– 16
27 => (2x –
3)(4x + 5)
28 => 16x2 – 80x + 100
29 => (– 5x + 7)2
30 => 4x2
– 16
31 => (– 1x
+ 2)(3 – 4x)
32 => 64 – 70x + 25x2
33 => (4 – 6x)2
34 => 36x2
– 49
35 => (x + 2)(5x + 6)
36 => 36x2 + 50x + 25
37 => (4x – 3)2
38 => (7x + 9)(5x + 4)
39 => (1 – 5x)(1
+ 2x)
40 => 4x2 – 24x + 36
1. (2x -4)2 = ?
2. (3x-6)(2x+7) = ?
3. (1-4x)(1+4x) = ?
4. (5-2x)(4x+3) = ?
5. (7+3x)2 = ?
6. (5x-3)2 = ?
7. (7x-2)2 = ?
8. (4-3x)2 = ?
9. (5x+3)(5x-3) = ?
10. (8-2x)(8+2x) = ?
11. 25x2 -9 = ?
12. 16-4x2 = ?
2. Thu gọn : 4x2 – 25
3. Khai triển : (4y + 2)2
4. Thu gọn : 9x2 – 81
5. Khai triển : (3x – 7)2
6. Thu gọn : 100 – 4x2
7. Khai triển : 4 – 100x2
8. Thu gọn : 16y2 – 64y + 64
9. Khai triển : 25x2 - 49
10. Thu gọn : 9x2 +42x +49
11. Khai triển : 64 – 64x2
12. Thu gọn : 9 – 36x + 36x2
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