Cho 3a\(^2\)+2b\(^2\)+c\(^2\)<=1

Tìm Min P= \(\dfrac{3a}{bc}\)+\(\dfrac{4b}{ac}\)+\(\dfrac{5c}{ab}\)

giải pt

(\(\sqrt{x+5}\) - \(\sqrt{x-2}\) ) (1+\(\sqrt{x^2+7x+10}\))=3

Cho x>=10

Tìm min A=\(\dfrac{2x^2+x}{3}\)

Cho a>=10

Tìm Min A=\(\dfrac{2x^2+3}{x}\)

Cho a+b+c<=3

Tìm min A=\(\dfrac{1}{a^2+b^2+c^2}\)+\(\dfrac{2018}{ab+bc+ca}\)

Cho a>=2,b>=3,c>=4

tìm Min A=a+b+c+\(\dfrac{1}{a}\)+\(\dfrac{1}{b}\)+\(\dfrac{1}{c}\)

Cho a+2b+3c>=20

Tìm Min A= a+b+c+\(\dfrac{3}{a}\)+\(\dfrac{9}{2b}\)+\(\dfrac{4}{c}\)

Cho a,b,c là 3 cạnh của tam giác. Tìm Min

P= \(\dfrac{4a}{b+c-a}\)+\(\dfrac{9b}{a+c-b}\)+\(\dfrac{16c}{a+b-c}\)

Tìm Min

A=\(\dfrac{\sqrt{x-2018}}{x}\)+\(\dfrac{\sqrt{y-2019}}{y}\)

Tìm Min

A= \(\dfrac{3}{2x}\)+\(\dfrac{2}{1-x}\)(0<x<1)