\(\frac{2020.2020+3030}{2021.2021-1011}\)
\(=\frac{2020.2020+3030}{\left(2020+1\right)\left(2020+1\right)+3030}\)
\(=\frac{2020.2020+3030}{\left(2020+1\right)2020+2020+1-1011}\)
\(=\frac{2020.2020+3030}{2020.2020+2020+2020+1-1011}\)
\(=\frac{2020.2020+3030}{2020.2020+3030}=1\)