Is there a mathematical way to prove that 2+2=4? Not just off of common knowledge but is there actually a way to prove it?
2006-10-30 12:08:38 · 12 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
2+2=4
2=4-2
2=2
The shortest way
2006-10-30 15:26:10 · answer #1 · answered by Anonymous · 3⤊ 1⤋
Honestly, the actual proof probably involves more complexity than we laymen might imagine. My guess is that we start by showing the definition of the amount of two, and then why we determine that the numbers go in order 1, 2, 3, 4, 5.....where adding a quantity of 2 to another quantity of 2 yields what we've defined to be a quantity of four.
If we set up our number system to read 1, 2, 3, 5, 4.....then 2 + 2 would equal "5."
2006-10-30 20:17:51 · answer #2 · answered by wheezer_april_4th_1966 7 · 0⤊ 1⤋
Some one who cant count will not know that 2+2=4
2006-10-30 20:18:44 · answer #3 · answered by ole_lady_93 5 · 0⤊ 1⤋
2+2=4
subtract 2 from both sides
2+2 -2=4-2
2=2
2006-10-30 20:11:10 · answer #4 · answered by Anonymous · 0⤊ 1⤋
2+2=2(2) just as x+x=2(x)
therefore 2+2=4 becomes 2(2)=4
you can then divide by 2 to get (2)=2...proving this equation to be true
2006-10-30 20:12:10 · answer #5 · answered by Alex P 2 · 0⤊ 1⤋
There actually is a whole mathematical theory to that, but it's way too complex for me to understand let alone show you!! You could check this site out however if you're interested!
http://us.metamath.org/mpegif/mmset.html#trivia
2006-10-30 20:15:36 · answer #6 · answered by Zoopy 2 · 1⤊ 1⤋
Ive always wondered that!!!! like they could of said "2+2=fish"or something! but i dont know how they got 2+2=4. i guess its just common sense.
2006-10-30 20:10:50 · answer #7 · answered by Anonymous · 1⤊ 1⤋
put 2 apples next to another 2 apples & count.
2006-10-30 20:10:28 · answer #8 · answered by IMHO 6 · 0⤊ 1⤋
Count two of your fingers and then count two more and you will have four fingers total.
2006-10-30 20:12:26 · answer #9 · answered by Sandstorm222 2 · 0⤊ 1⤋
it already is proven...it's a fact...haha
i have two circle here and two here
O O O O
how many do i have all together>...?
2006-10-30 20:10:42 · answer #10 · answered by true 3 · 0⤊ 2⤋