RE: (A-B)(A+B) = B(A-B)
cancel the common factor on both sides
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What could go wrong if you divide 0 by 0?
The nation has been divided by (Emperor) Zero, what has gone wrong?
Dr. science can and does divide by zero (it’s very dangerous though).
“Dear Dr. Science: Why can’t you divide by zero?”
“I don’t know about you, but I can and often do divide by zero... but only after I’ve taken the proper precautions. First of all, I fast for 48 hours, consuming only mildly fluoridated water during that time. Next I don a special Mylar/Teflon suit and put on a digitally recorded CD of Gregorian chants.”
“I begin by dividing very small numbers by other very small numbers. As the numbers get smaller and smaller, the sparks begin to fly. If all goes well, I take a deep breath and divide a very small number by zero.”
“There’s a flash of light, a muffled roar....and when I come to, the lab is filled with smoke and the scent of burning Mylar. So you see, you can divide by zero if you really want to. But chances are, you just don’t want to badly enough!”
0-bama.
“What could go wrong if you divide 0 by 0?”