#### ShawnD

Science Advisor

- 658

- 1

first of all, A --> B so A and B are almost equal. IIRC, ~ means something like almost equal so I will use it to relate the two.

A ~ B then multiply both sides by A

A^2 ~ AB then subtract B^2 from both sides

A^2 - B^2 ~ AB - B^2 then we factor both sides

(A + B) * (A - B) ~ B * (A - B) now divide both sides by (A - B)

A + B ~ B since A and B are almost equal, let's half ass simplify

B + B ~ B combine like terms

2B ~ B factor out B

2 ~ 1 what the heck?

At the step where both sides are divided by A - B, that is

**NOT**a divide by 0 error. Since A and B are not exactly equal, that operation was perfectly legal.

So where is the flaw here?