\(\left(x^2+1\right)^2+3x\left(x^2+1\right)+2x^2=0\)

\(\left(x^4+2x^2+1\right)+3x^3+3x+2x^2=0\)

\(x^4+2x^2+1+3x^3+3x+2x^2=0\)

\(x^4+4x^2+1+3x^3+3x=0\)

\(\left(x+1\right)\left(x^3+2x^2+2x+1\right)=0\)

\(\left(x+1\right)\left(x+1\right)\left(x^2+x+1\right)=0\)

\(\orbr{\begin{cases}x+1=0\Rightarrow x=\left(-1\right)\\x^2+x+1=0\left(vôlí\right)\end{cases}}\)

x= -1

\(\left(x^2+1\right)^2+3x\left(x^2+1\right)+2x^2=0\)

\(\Leftrightarrow\left(x^2+1\right)^2+x\left(x^2+1\right)+2x\left(x^2+1\right)+2x^2=0\)

\(\Leftrightarrow\left(x^2+1\right)\left(x^2+x+1\right)+2x\left(x^2+x+1\right)=0\)

\(\Leftrightarrow\left(x^2+2x+1\right)\left(x^2+x+1\right)=0\Leftrightarrow\left(x+1\right)^2\left(x^2+x+1\right)=0\Rightarrow x=-1\)

1+1=2 

hok tốt

.... kb òi k ik

Trả lời :

1 + 1

= 2

Mk kb ròi :))

Hok tốt !

#Minh#

My mother angry  sees me play video game

Chỉ huy 

Answer :

My mother was angry when she saw me played video game.

Study well !!

Đồng bậc 2 vế rồi dùng sos:D

Làm luôn:v

\(3\left(a^4+b^4+c^4\right)\ge\left(a+b+c\right)\left(a^3+b^3+c^3\right)\)

\(\Leftrightarrow\left(a+b\right)\left(a-b\right)^2+\left(b+c\right)\left(b-c\right)^2+\left(c+a\right)\left(c-a\right)^2\ge0\)*Đúng*

P/s: kiểm tra giúp xem em có tính sai chỗ nào ko nha! Dạo hay em hay nhầm lẫn lắm:(

x=1

y=1