\(9=11 \)!!!
Level
pending
Line 1: \(99=99\)
Line 2: \(180-81=220-121\)
Line 3: \(81-180=121-220\)
Line 4: \(9^2-2\cdot9\cdot10+10^2=11^2-2\cdot11\cdot10+10^2\)
Line 5: \((9-10)^2=(11-10)^2\)
Line 6: \(9-10=11-10\)
Cancelling \(-10\) from both sides, we obtain \(9=11\)
In which line I did the mistake?
by
Rajesh Mondal