STEP 1 X^2-X^2=X^2-X^2
STEP 2 X[X-X]=[X+X}{X-X}
STEP 3 X-X GETS CANCEL OUT
STEP 4 X=2X
STEP 5 X AND X GETS CANCEL OUT
STEP 6 1=2
IN WHICH STEP WE ARE WRONG
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STEP 3 IS WRONG AS X-X = 0 AND 0 CANT BE CANCELLED