Question repeated:
Let a = b
Then, a^2 = ab
a^2 - b^2 =ab - b^2.
(a+b)(a-b) = b(a-b)
a+b = b?
Suppose a = b = 1
1 + 1 = 1
2 =1
Hence all numbers are equal..
Is this right? Let a = b. Then, a^2 = ab. a^2 - b^2 =ab - b^2. (a+b)(a-b) = b(a-b). a+b = b?
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