Cho a,b>0 và a+b=1

\(\dfrac{1}{a^4+b^4}+\dfrac{2}{a^2b^2}\ge40\)

CHo \(x,y>0\) và xy=16 Tìm Min S\(=\dfrac{x^3}{16\left(y+16\right)}+\dfrac{y^3}{16\left(x+16\right)}+\dfrac{2021}{2022}\)

Write a paragraph of about150 words about the followwing topic people say that online learning should be advisable when big epidemics like Covid -19 break out .Do you agree with the statement? *Note You are not allowed to include any personal information such as your name,your school 's name ,your address,etc,in your writing

Cho a,b,c là 3 số thực dương tùy ý Chứn minh rằng

\(\dfrac{a}{\sqrt{ab+b^2}}+\dfrac{b}{\sqrt{bc+b^2}}+\dfrac{c}{\sqrt{ac+a^2}}\ge\dfrac{3\sqrt{2}}{2}\)

Giải phương trình nghiệm nguyên \(y^4+2y^3-y^2-2y-x^2-x=0\)

giải phương trình nghiệm nguyên \(y^4+2y^3-y^2-2y-x^2-x=0\)