Severe Math Weirdness

Want to see something strange? Look at this.

a – b = 2
( a – b )^2 = 2^2 = 4
a^2 – 2ab + b^2 = 4
a^2 + b^2 = 4 + 2ab

Look good so far? Lets try substituting some variables in for a and b. Say, 4 and 2.

(4)^2 + (2)^2 = 4 + 2(4)(2)
20 = 20

Seems to add up. Now lets try it with a larger number for a. I’ll use 1002. b remains set at 2.

(1002)^2 + (2)^2 = 4+2(1002)(2)
1004008 = 4012

Ack! Math is broken!

Seriously, it took me like half an hour to figure this one out today. And it’s a review question from like three years ago. I think I need more sleep. Or to pay more attention. One of the two.

Advertisements

2 Responses to “Severe Math Weirdness”


  1. 1 Steph March 25, 2006 at 5:30 am

    Hello. Came to ur blog tru some of ur comments on raining-noodles.

    Anyway….it a=1002 and b=2 then a-b in not equal to 4 [first eqn], so how can u use the eqn?

    Or am i wrong somewhere?

  2. 2 James March 26, 2006 at 2:31 am

    Yeah, that’s it. I got so engrossed with the thing that I forgot the first equation, I literally did not write it down. Pretty stupid, eh? 😉


Comments are currently closed.



RSS Status

  • An error has occurred; the feed is probably down. Try again later.

Del.icio.us

Creative Commons License
This stuff is licensed under a Creative Commons License.

%d bloggers like this: