-20=-20
16-36=25-45
42-4.9=52-5.9
42-2.4.9292+814814=52-2.5.9292+814814
(4−92)2(4−92)2=(5−92)2(5−92)2
4-9292=5-9292
4=5
4-4=5-4
0=1
Luôn có: (a-b)2=(b-a)2
\(\Leftrightarrow\)a-b=b-a\(\Leftrightarrow\)2a=2b\(\Leftrightarrow\)a=b
Ta chọn: a=0 và b=1 \(\rightarrow\)0=1
Vậy 0=1