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edgeprod · 01-12-2011, 04:24 PM

16 - 36 = 25 - 45
Both result in -20, so they're equivalent, right?

(16 - 36) + 81/4 = (25 - 45) + 81/4
Since they're both equivalent, let's add 81/4 to each side

a^2 - 2*a*b + b^2 = (a - b)^2

or

4^2 - 2*4*(9/2) + (9/2)^2 = 5^2 - 2*5*(9/2) + (9/2)^2
(16 - 36 + 81/14 = 25 - 45 + 81/4)

4 - 9/2 = 5 - 9/2
Performed square root and subtraction from each side

4 = 5
Removed extraneous data (9/2) from each side

Therefore:

2+2 = 5

... right or wrong?

01-12-2011, 04:24 PM
edgeprod Permanently Gone Industry Role: Join Date: Mar 2004 Posts: 10,019	Check the math, please ... 16 - 36 = 25 - 45 Both result in -20, so they're equivalent, right? (16 - 36) + 81/4 = (25 - 45) + 81/4 Since they're both equivalent, let's add 81/4 to each side a^2 - 2ab + b^2 = (a - b)^2 or 4^2 - 24(9/2) + (9/2)^2 = 5^2 - 25(9/2) + (9/2)^2 (16 - 36 + 81/14 = 25 - 45 + 81/4) 4 - 9/2 = 5 - 9/2 Performed square root and subtraction from each side 4 = 5 Removed extraneous data (9/2) from each side Therefore: 2+2 = 5 ... right or wrong?