Question

x²⁰²²-x²⁰²⁰=0

Answer 1

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

hay \(x\in\left\{0;1;-1\right\}\)

Answer 2

\(x^{2022}-x^{2020}=0\\ x^{2020}\left(x^2-1\right)=0\\ x^{2020}\left(x-1\right)\left(x+1\right)=0\\ \Rightarrow\left\{{}\begin{matrix}x^{2020}=0\Rightarrow x=0\\x-1=0\Rightarrow x=1\\x+1=0\Rightarrow x=-1\end{matrix}\right.\)

Answer 3

x²⁰²² - x²⁰²⁰ = 0

x²⁰²⁰. x² - x²⁰²⁰ = 0

x²⁰²⁰. (x²-1) = 0

Xét 2 trường hợp

TH1: x²⁰²⁰ = 0

=> x = 0

TH2: x² - 1 = 0

=> x = 1

vậy x = {0;1}