Răspuns:
(49-9):4+49-1+0=
=40:4+49+1
=10+49+1
=59+1
=60
[tex](7^{2} - 3^{2} ):2^{2} +7^{2} - 1^{2019} +0^{2020} =\\= (49-9):4+49-1+0=\\=40:4+48=\\=10+48=\\=58[/tex]