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Let X = Y Multiply Y …

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Let X = Y

Multiply Y both sides,

Now, XY=Y2

Subtract X2 both sides,

So,    XY - X= Y2 - X,

This will be,  X(Y-X) = (Y-X) (Y+X),

now (Y-X) cancel out both sides....

so,  X = Y+X 

( As we let above X=Y, so we can replace Y to X ),

so,  X = X + X

.       X = 2X

now,. X/X = 2,

And this will be ((( 1= 2 )))...!!!!!!!!!!!! How is this possible , I am still confused?????

  • 2 answers

Mintu Rawat 7 years, 1 month ago

OK thanks,....

Naveen Sharma 7 years, 1 month ago

Ans.You start by X = Y 

it means (Y-X)=  0 And you can't divide anything by zero.

so dividing both sides by (Y-X) is illegal.

http://mycbseguide.com/examin8/

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