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There have been 86 items by DBS (Search limited from 06-06-2020)

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$6(ab+bc+ca)+a(a-b)^2+b(b-c)^2+c(c-a)^2\leq2$ in Bất đẳng thức và cực trị Started by DBS, 19-05-2021	2 replies 347 views	DBS 19-05-2021
$\frac{a}{1+bc}+\frac... in Bất đẳng thức và cực trị Started by DBS, 18-05-2021	2 replies 347 views	KietLW9 18-05-2021
$\frac{\sqrt{xy}}... in Bất đẳng thức và cực trị Started by DBS, 18-05-2021	1 reply 341 views	Hunghcd 18-05-2021
$2x^2+5x+11=(x+7)\sqrt{2x^2+1}$ in Đại số Started by DBS, 11-05-2021	5 replies 2536 views	VHTuan 13-05-2021
$\frac{a}{\sqrt{ab+b^2... in Bất đẳng thức và cực trị Started by DBS, 11-05-2021	5 replies 482 views	KietLW9 12-05-2021
$A=\frac{1}{x+2yz}+\fr... in Bất đẳng thức và cực trị Started by DBS, 11-05-2021	2 replies 428 views	KietLW9 11-05-2021
$x(2x-11)=3(\sqrt[3]{4x-4}-7)$ in Phương trình, hệ phương trình và bất phương trình Started by DBS, 10-05-2021	3 replies 564 views	Baoriven 10-05-2021
$P=13\sqrt{\frac{1}{x... in Bất đẳng thức và cực trị Started by DBS, 09-05-2021	7 replies 478 views	DBS 09-05-2021
$x^2=\sqrt{5x+1}+\sqrt{5-x... in Đại số Started by DBS, 08-05-2021	2 replies 477 views	DBS 09-05-2021
Chứng minh: $\widehat{BAS}=\wide... in Hình học Started by DBS, 07-05-2021	1 reply 486 views	trambau 08-05-2021
$P=a^2+2b^2+c^2$. in Bất đẳng thức và cực trị Started by DBS, 07-05-2021	1 reply 320 views	KietLW9 07-05-2021
$a^3+b^3+c^3 \leqslant \frac{1}... in Bất đẳng thức và cực trị Started by DBS, 07-05-2021	1 reply 368 views	KietLW9 07-05-2021
Min: $P=\sqrt{x^4+4x^3+6x^2+4x+2}+... in Bất đẳng thức và cực trị Started by DBS, 01-05-2021	1 reply 401 views	KietLW9 02-05-2021
Tìm $GTNN$ của biểu thức: $P= \sum... in Bất đẳng thức và cực trị Started by DBS, 30-04-2021	2 replies 402 views	ChiMiwhh 01-05-2021
$P=\sqrt{1+a^4}+\sqrt{1+b^4... in Bất đẳng thức và cực trị Started by DBS, 01-05-2021	9 replies 576 views	DBS 01-05-2021
Tìm $GTNN, GTLN$ của: $P=\frac{a... in Bất đẳng thức và cực trị Started by DBS, 29-04-2021	0 replies 261 views	DBS 29-04-2021
$M=2a^4-b^4+6ab+8a^2-10a-2b+2026$ in Bất đẳng thức và cực trị Started by DBS, 23-04-2021	1 reply 438 views	KietLW9 23-04-2021
Tìm GTNN của $A=\frac{a^3}{1+b... in Bất đẳng thức và cực trị Started by DBS, 18-04-2021	1 reply 587 views	Nguyen Van Hoang noob 18-04-2021
$P=\sum \frac{1}{\sqrt... in Bất đẳng thức và cực trị Started by DBS, 13-04-2021	0 replies 492 views	DBS 13-04-2021
Tìm GTNN của $n$. in Bất đẳng thức và cực trị Started by DBS, 10-04-2021	1 reply 621 views	chanhquocnghiem 11-04-2021
Chứng minh $x+y \geq 2a$ in Bất đẳng thức và cực trị Started by DBS, 08-04-2021	0 replies 481 views	DBS 08-04-2021
Chứng minh rằng: $\widehat{BPQ}=... in Hình học Started by DBS, 05-08-2019	1 reply 641 views	vkhoa 05-08-2019
Chứng minh: $A=(a+b)(b+c)(c+a)-abc\vdots 4$ in Đại số Started by DBS, 30-07-2019	2 replies 761 views	Sin99 30-07-2019
Chứng minh: $a^3+b^3+c^3+d^3=3(c+d)(ab-cd)$ in Đại số Started by DBS, 30-07-2019	1 reply 491 views	Khoipro999 30-07-2019
$a^2+b^2=$? in Đại số Started by DBS, 28-07-2019	3 replies 664 views	Arthur Pendragon 30-07-2019

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