1ab + 1 = ab2
100 + ab + 1 = ab x 10 + 2
101 + ab = ab x 10 + 2
=> 101 - 2 = ab x (10 - 1)
=> 99 = ab x 9
=> ab = 99 : 9
=> ab = 11
Vậy a = 1 ; b = 1
Ủng hộ mk nha !!! ^_^
1ab+1=ab2
\(\Rightarrow\)100+ab+1=ab x 10+2
\(\Rightarrow\)100+1-2=ab x 10-ab
\(\Rightarrow\)99=ab x (10-1)
\(\Rightarrow\)ab x 9=99
\(\Rightarrow\)ab=11