\documentclass[a4paper,12pt]{report}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[polish]{babel}
\usepackage{geometry}
\usepackage{amsmath}
\usepackage{amsthm}
\geometry{
	tmargin = 2cm,
	bmargin = 2cm,
	lmargin = 2cm,
%	rmargin = 2cm
}
\title{\LaTeX  dla zielonych}

\begin{document}
\maketitle
\tableofcontents
\begin{abstract}
	witam witam witam
	ogunie
\end{abstract}

\part{Latext dla zielonych}
\chapter{Wzory matematyczne}

$$ x + 2 $$
	

\end{document}