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There have been 73 items by OiDzOiOi (Search limited from 17-05-2020)

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Tìm a,b để $P=\frac{(a-b)(2a-c)}... in Đại số Started by Hannie, 18-03-2016	2 replies 382 views	OiDzOiOi 19-03-2016
$\sum \frac{1}{(2n+1)(... in Bất đẳng thức và cực trị Started by OiDzOiOi, 25-02-2016	1 reply 388 views	Quoc Tuan Qbdh 25-02-2016
$\frac{1}{a_{1}}+... in Số học Started by OiDzOiOi, 06-03-2016	2 replies 397 views	Laxus 10-03-2016
Cho $(a,b)=1$, $a^{2}-b^{2... in Số học Started by O0NgocDuy0O, 19-03-2016	4 replies 429 views	OiDzOiOi 20-03-2016
$T=\frac{x^{2}+3y^{2}... in Bất đẳng thức và cực trị Started by OiDzOiOi, 09-03-2016	2 replies 433 views	I Love MC 10-03-2016
$\sum \frac{a^{2}}... in Bất đẳng thức và cực trị Started by OiDzOiOi, 11-10-2015	5 replies 447 views	KietLW9 14-04-2021
$a^{2}+b^{2}=\begin{bm... in Số học Started by OiDzOiOi, 20-03-2016	3 replies 449 views	I Love MC 20-03-2016
$\sqrt{k^{2}-kp}\in N*... in Số học Started by OiDzOiOi, 16-09-2016	0 replies 458 views	OiDzOiOi 16-09-2016
Tìm $P_{min}=\frac{x}{... in Bất đẳng thức và cực trị Started by Bui Thao, 20-03-2016	5 replies 470 views	OiDzOiOi 20-03-2016
$\frac{27a^{2}}{c(c^{2}+9a^{2})}+\frac{b^{... in Bất đẳng thức và cực trị Started by OiDzOiOi, 20-03-2016	1 reply 504 views	I Love MC 20-03-2016
$\left\{\begin{matrix}... in Phương trình, hệ phương trình và bất phương trình Started by OiDzOiOi, 17-03-2016	2 replies 559 views	royal1534 17-03-2016
Chứng minh rằng KH=HC in Hình học Started by ViTuyet2001, 27-03-2016 hình 7, toán 7 and 1 more...	1 reply 567 views	OiDzOiOi 27-03-2016
Chứng minh rằng:$\widehat{ACH}=\... in Hình học Started by ngobaochau1704, 13-03-2016 hình học	3 replies 589 views	ngobaochau1704 15-03-2016
Chứng minh A chia hết cho 12 in Số học Started by 01634908884, 07-03-2016	2 replies 629 views	I Love MC 08-03-2016
CMR:$x^{2}y^{2}(x^{2}+... in Bất đẳng thức và cực trị Started by beanhdao01, 18-03-2016	3 replies 683 views	OiDzOiOi 20-03-2016
$s_{1}=2$, $s_{2}=2+5... in Đại số Started by OiDzOiOi, 27-03-2016	3 replies 694 views	hthang0030 29-03-2016
$\left\{\begin{matrix}... in Phương trình, hệ phương trình và bất phương trình Started by OiDzOiOi, 20-03-2016	1 reply 778 views	tranwhy 20-03-2016
CMR $\sum \frac{a^{2}}{a+bc}\geq... in Bất đẳng thức và cực trị Started by Duy Thuong, 20-03-2016	10 replies 822 views	OiDzOiOi 20-03-2016
$\frac{1}{x^{2}}+... in Đại số Started by lamgiaovien2, 25-03-2016 viet	10 replies 941 views	OiDzOiOi 25-03-2016
Tìm a, b, c sao cho đa thức : $x^{4}+ax^... in Số học Started by tanthanh112001, 22-03-2016	1 reply 1169 views	OiDzOiOi 22-03-2016
tìm tất cả các số nguyên dương n sao cho T= $2^n+3^n... in Đại số Started by shinran135, 27-03-2016	2 replies 1233 views	HoaiBao 27-03-2016
Tính a+b+c. in Đại số Started by OiDzOiOi, 27-03-2016	4 replies 1263 views	Mystic 28-03-2016
Đề thi hsg toán 8 Nam Định in Tài liệu - Đề thi Started by lenadal, 25-03-2016 topic hsg 8 1 2	21 replies 1489 views	NDT2002 30-03-2016
TỔNG HỢP BDT & CÁCH CM in Bất đẳng thức và cực trị Started by adamfu, 27-02-2016 1 2	24 replies 2051 views	adamfu 18-03-2016
Chứng minh rằng với n là số tự nhiên lớn hơn 1 thì 2^n -... in Số học Started by Momoko Suzuka, 20-02-2016 số học thcs	5 replies 5766 views	I Love MC 21-02-2016

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