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There have been 32 items by nguyenchithanh2511 (Search limited from 21-05-2020)

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Chứng minh K là tâm đường tròn nội tiếp tam giác ABC in Hình học Started by piluv, 07-11-2021	1 reply 1043 views	nguyenchithanh2511 07-11-2021
GPT $5(8x^{2}+11)=27(2x+1)\sqrt{... in Đại số Started by nguyenchithanh2511, 02-09-2021	0 replies 1033 views	nguyenchithanh2511 02-09-2021
$7^{x}+x^4+47=y^2 (x,y \in \mathbb{Z})$ in Số học Started by lmtrtan123334, 02-05-2022 sohoc	1 reply 690 views	nguyenchithanh2511 18-05-2022
Tính IH in Hình học Started by nguyenchithanh2511, 23-10-2021	1 reply 630 views	tritanngo99 24-10-2021
$3x^2 - 18y^2 + 2z^2 + 3y^2z - 18x = 27$ in Số học Started by Mathlegend, 10-12-2021	4 replies 628 views	Mathlegend 11-12-2021
$3\sqrt[3]{\frac{x^2-2x+2}... in Phương trình, hệ phương trình và bất phương trình Started by Just4Mgl, 25-10-2021	1 reply 615 views	nguyenchithanh2511 27-10-2021
phần nguyên của $\frac{n^3+8n+1}... in Số học Started by nguyenchithanh2511, 27-10-2021	0 replies 613 views	nguyenchithanh2511 27-10-2021
Cho a,b,c,d >0 tm $abc=a+b+c+2$ CM $... in Bất đẳng thức và cực trị Started by nguyenchithanh2511, 10-09-2021	1 reply 611 views	Dark Repulsor 11-09-2021
Cho $x,y,z>0$ và $x\geq y\ge... in Bất đẳng thức và cực trị Started by bimcaucau, 26-09-2021	2 replies 603 views	bimcaucau 26-09-2021
RGBT $C=\sqrt{\frac{1}{a^2+b^2}+\frac... in Đại số Started by nguyenchithanh2511, 14-09-2021	0 replies 595 views	nguyenchithanh2511 14-09-2021
$MK^{2}-NK^{2}=MO^{2}-... in Hình học Started by nguyenchithanh2511, 12-02-2022	2 replies 582 views	PDF 16-02-2022
GPT $x^{2}+8x-1=2(2x+1)\sqrt{2x... in Phương trình, hệ phương trình và bất phương trình Started by nguyenchithanh2511, 03-10-2021	0 replies 577 views	nguyenchithanh2511 03-10-2021
$P=\frac{3a^{2}+a^{2}b+\frac{9ab^{2}}{2}+(... in Bất đẳng thức và cực trị Started by nguyenchithanh2511, 07-11-2021	1 reply 537 views	KietLW9 17-11-2021
hỏi ngoài chủ đề in Thử các chức năng của diễn đàn Started by nguyenchithanh2511, 04-10-2021	0 replies 511 views	nguyenchithanh2511 04-10-2021
CM in Hình học Started by nguyenchithanh2511, 24-08-2021	0 replies 475 views	nguyenchithanh2511 24-08-2021
Chứng minh $\frac{1}{AF^{2}}=\frac{1}{AB^{... in Hình học Started by nguyenchithanh2511, 08-08-2021	0 replies 448 views	nguyenchithanh2511 08-08-2021
Với $m,n\epsilon Z$ cm $mn(m^4-n^4)... in Số học Started by nguyenchithanh2511, 22-09-2021	1 reply 421 views	Tan Phuc Nguyen 26-09-2021
Tìm nghiệm tự nhiên cùa phương trình $3^{x}+1=y^{2}... in Số học Started by nguyenchithanh2511, 15-08-2021	1 reply 418 views	kogioitoan 15-08-2021
CMR $\frac{sin^3 x}{a^{3... in Hình học Started by nguyenchithanh2511, 18-03-2022	0 replies 393 views	nguyenchithanh2511 18-03-2022
Tìm các số $abc$ với các chữ số khác nhau để... in Số học Started by nguyenchithanh2511, 04-09-2021	0 replies 390 views	nguyenchithanh2511 04-09-2021
CM $\frac{IA}{IC}=\fra... in Hình học Started by nguyenchithanh2511, 18-12-2021	1 reply 381 views	Le Tuan Canhh 18-12-2021
CMR : $xa^{2}+yb^{2}>xyc^{2}$ in Bất đẳng thức và cực trị Started by nguyenchithanh2511, 18-05-2022	0 replies 370 views	nguyenchithanh2511 18-05-2022
Tìm p,q nguyên sao cho $\sqrt{p-2} +... in Đại số Started by nguyenchithanh2511, 16-08-2021	1 reply 364 views	KietLW9 16-08-2021
Tìm $n\epsilon N$ , $n>1$ để... in Số học Started by nguyenchithanh2511, 06-09-2021	1 reply 362 views	Hoang72 06-09-2021
Tính x in Hình học Started by nguyenchithanh2511, 17-11-2021	0 replies 286 views	nguyenchithanh2511 17-11-2021

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