Các câu hỏi tương tự
cmr : a^2/b^2 +b^2/c^2+c^2/a^2 luon luon lon hon hoac bang c/b+ b/a+ a/c voi a,b,c lon hon 0
CMR so thuc a,b,c thi a^2+b^2+c^2+ab+bc+ca lon hon hoac bang 0
CMR so thuc a,b,c thi a^2+b^2+c^2+ab+bc+ca lon hon hoac bang 0
Với x R. Chứng minh rằng: 2x4 + 1 >= 2x3 + x2
Thực hiện phép chia:a) (
x
3
-
2
x
2
- 15x + 36) : (x + 4);b) (
2
x
4
+
2
x
3
+
3
x
2
- 5x - 20) : (
x
2
+ x + 4);c) (2
x
3...
Đọc tiếp
Thực hiện phép chia:
a) ( x 3 - 2 x 2 - 15x + 36) : (x + 4);
b) ( 2 x 4 + 2 x 3 + 3 x 2 - 5x - 20) : ( x 2 + x + 4);
c) (2 x 3 + 11 x 2 + 18x-3) : (2x + 3);
d) (2x3 + 9x2 +5x + 41) : (2x2 - x + 9).
1. (x3 – 3x2 + x – 3) : (x – 3) 2. (2x4 – 5x2 + x3 – 3 – 3x) : (x2 – 3) 3. (x – y – z)5 : (x – y – z)3 4. (x2 + 2x + x2 – 4) : (x + 2) 5. (2x3 + 5x2 – 2x + 3) : (2x2 – x + 1) 6. (2x3 – 5x2 + 6x – 15) : (2x – 5)
Cứu với ạ
Làm tính chia
1) (x3 – 3x2 + x – 3) : (x – 3) 2) (2x4 – 5x2 + x3 – 3 – 3x) : (x2 – 3)
3) (x – y – z)5 : (x – y – z)3 4) (x2 + 2x + x2 – 4) : (x + 2)
| 5) (2x3 + 5x2 – 2x + 3) : (2x2 – x + 1) | 6) (2x3 – 5x2 + 6x – 15):(2x – 5) |
a. (2x4 - x3 + 4x - 2) : (2x-1)
b. (2x3 - x2 -5x - 2) : (x-2)
c. (-6a3 + a2 + 26a – 21): (2a – 3)
d. (x4 - 3x2 - 10x - 6) : (x2 - 2x +3)
Bai 2: cho a,b,c>0.CMR
\(\frac{a^3}{bc}+\frac{b^3}{ac}+\frac{c^3}{ab}\)lon hon hoac bang a+b+c