Question

Giúp em tìm x với ạ

Answer 1

\(x^4(x-2)-2+x=0\)

\(<=>x^4(x-2)+2(x-2)=0\)

\(<=>(x-2)(x^4+2)=0\)

\(<=>x^3(x-2)(x+2)=0\)

\(<=>[x^3=0<=>[x=0\)

\(<=>[(x-2)=0<=>[x=2\)

\(<=>[(x+2)=0<=>[x=-2\)

Answer 2

`x^4(x-2)-2+x=0`

`<=>x^4(x-2)-(2+x)=0`

`<=>x^4(x-2)-(2-x)=0`

`<=>x^4(x-2)+(x-2)=0`

`<=>(x-2)(x^4+1)=0`

\(\Leftrightarrow\left[{}\begin{matrix}x-2=0\\x^4_{ }+1=0\end{matrix}\right.\)

`->` pt ko có nghiệm