Comments on: One of the Oldest Math Tricks http://mathtricks.org/math-tricks/one-of-the-oldest-math-tricks/ Math Tricks - Making Math Fun! Tue, 27 Jul 2010 14:00:23 +0000 hourly 1 http://wordpress.org/?v=3.0.1 By: masaru shinoda http://mathtricks.org/math-tricks/one-of-the-oldest-math-tricks/comment-page-1/#comment-51 masaru shinoda Tue, 09 Mar 2010 15:46:23 +0000 http://mathtricks.org/?p=208#comment-51 ahahahahaha.. it's a nice trick.. ^_^v if A=B so, A-B = 0 right.? therefore: => (A+B)(A-B) = A(A-B) => (A+B)(A-B) = A(A-B) -------- ---- (A-B) (A-B) => Let us A=2 and B=1; therefore; (A-B) is (2-1) => so the A-B = 0 => the solution must be undefine... ................................♣cUtEmAntsAnG♣.................. ahahahahaha.. it’s a nice trick.. ^_^v

if A=B

so, A-B = 0 right.?

therefore: => (A+B)(A-B) = A(A-B)

=> (A+B)(A-B) = A(A-B)
——– —-
(A-B) (A-B)

=> Let us A=2 and B=1; therefore; (A-B) is (2-1)
=> so the A-B = 0

=> the solution must be undefine…

…………………………..♣cUtEmAntsAnG♣………………

]]> By: Ryan http://mathtricks.org/math-tricks/one-of-the-oldest-math-tricks/comment-page-1/#comment-41 Ryan Wed, 10 Feb 2010 13:51:52 +0000 http://mathtricks.org/?p=208#comment-41 don't call it a proof. it's not a proof. don’t call it a proof. it’s not a proof.

]]> By: mike http://mathtricks.org/math-tricks/one-of-the-oldest-math-tricks/comment-page-1/#comment-40 mike Tue, 09 Feb 2010 13:19:51 +0000 http://mathtricks.org/?p=208#comment-40 as said a-b never cancelled bcoz a-b=0 and 0 never cancels other 0 as said a-b never cancelled bcoz a-b=0 and 0 never cancels other 0

]]> By: Marco http://mathtricks.org/math-tricks/one-of-the-oldest-math-tricks/comment-page-1/#comment-39 Marco Tue, 19 Jan 2010 14:09:50 +0000 http://mathtricks.org/?p=208#comment-39 By the first line: A=B => A-B=0 ... (A+B)(A-B) = A(A-B) You can't divide by (A-B), you can't divide by 0! By the first line: A=B => A-B=0

…
(A+B)(A-B) = A(A-B)

You can’t divide by (A-B), you can’t divide by 0!

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