ToppTutorAug 2, 20221 min read2 = 1Updated: Apr 16, 2023How can 2 = 1 ?First, recall (a + b)(a – b) = a2 – ab + ab – b2= a2 – b2 Then let’s go:a = ba2 = aba2 – b2 = ab – b2(a + b)(a – b) = b(a – b)Cancel (a – b)a + b = bRemember a = b sob + b = b2b = b2 = 1What’s wrong?

How can 2 = 1 ?First, recall (a + b)(a – b) = a2 – ab + ab – b2= a2 – b2 Then let’s go:a = ba2 = aba2 – b2 = ab – b2(a + b)(a – b) = b(a – b)Cancel (a – b)a + b = bRemember a = b sob + b = b2b = b2 = 1What’s wrong?

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