Mathematical Proof That  2 = 1
Searching for a math impossibility

Try this one out - see if you can find the hole here!
(Don’t scroll down until you’ve given it a good shot ...)

Initial supposition    x = y
Multiply both sides by x:     xx = xy
Subtract y squared from both sides:     xx - yy = xy - yy
Factor both sides:     (x + y)(x - y) = y(x - y)
Divide both sides by (x - y):     x + y = y
Substitute y for x, based on initial supposition:     y + y = y
Replace y with any number (eg. 1):     1 + 1 = 1 or 2 = 1


Scroll down to see the ‘flaw’ ...
























The step that divides through by (x - y) is effectively dividing by zero, based on the initial supposition. That invalidates the subsequent results.


see also   College  &  School  Sections
Math Puzzle

 

Stealth Cell Phone Tower

Holes of the World

Sunken Bed

Australian Wildfire Survivor

Rat Toys

Radish Camouflage

Apple Art

Cake Finders

Shot Glasses

Frog Spout Security

Chopper Bicycle

Canadian Suntan

Walkway To Heaven

Groucho Marx and Jimmy Savile

Despicable Shoes

Prayer Conditioning

Lazy People Make Excellent Engineers

Spaghetti Western

Under The Weather

Backpack Barney
Full list of creditsFacebookTwitterDiggStumbleUponDelicious

20-May-2019