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This is a funny proof which my friend showed me. Can u please find the error in it beacause i can't.

Let a = b

a2 = ab (a2 is a squared)

a2 - b2 = ab - b2

(a+b)(a-b)=b(a-b)

a+b=b 

b+b=b (a=b)

2b=b

2=1

I wud b really thankful if u wud tell me what the error is.

THANK YOU

@Nikhil: has given the correct explanation.

As is an indeterminate form i.e., it is not defined.

So, the step in which the factors (a – b) are cancelled from both the sides is incorrect.

Hope you got it now.

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In the third step (a+b) (a-b)=b (a-b) is done which is suppose is wrong. we should not cancel these terms and otherwise he is showing us 0/0 =1 because

a=b  and a-b=0  so in the mentioned step (a+b)(a-b)=b(a-b)  =>  (a+b)(a-b)/(a-b)=b  => (a+b)=b  means (a-b)/(a-b) =1 or in  reality 0/0=1 which actually is not defined.

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Thank You Very much.

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Thank you very much

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