There's an obvious flaw in this. See who's first to spot it. Since the forum text doesn't support superscript, I'm using a^2 to mean a squared

if a = b, then:

a^2 = ab (multiplying both sides by a) a^2 - b^2 = ab - b^2 (subtracting b^2) (a - b)(a + b) = b(a - b) (factorising) (a + b) = b (dividing through by (a-b) 2b = b (because a=b) 2 = 1 (dividing through by b)

No, no, no: I see the obvious flaw here -- Paraglider, it's simple: there's no chocolate in it. Just add chocolate for a perfect equation, every time. Next?

The Problem is in the Step 3, you are canceling out (a-b) both on the LHS as well as in the RHS. whereas a=b, and a-b=0, So divide by 0 error, as 0/0 is invalid operation ans will result in 0. As, 0/0= 0*(1/0). Anything multiplied by 0 is 0.

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