i have proved 2+2 = 5 Whats the flaw in it?
535772
If squares of two numbers are equal the two numbers need not be equal always i.e. there is no such axiom or rule. \n\nLet us explain. \nSuppose x^2=y^2. \nThen x^2-y^2=0 [Transposition rule]\nor (x-y)*(x+y)=0 [Factorising]\n\nAs product of two numbers is zero so at least one of them must be zero [since anything multiplied by zero is zero] so\neither (x-y)=0 or (x+y)=0.\n\nWhen x-y=0, x=y but when x+y=0, x=-y.\nNow 'x' and 'y' are such numbers that there squares are equal but that not imply x = y because x = -y is also possible.\n\nSo your step "rooting both sides" is wrong leading to the wrong result.\n\nUNDERSTAND?
161780
There is a simple mistake in your logic.\nYou want to say you will add x , x times. As you want to add it x time you are making it constant.( Because when you are diffrentiating, x can't change)\nwhen you diffrentiating const, all will be 0.\nso you have proved 0=0.
934914
yup 2+2=4, and some people are stupid!
531205
2 + 2 = 4\n\nthats all I got
269006
Ask your friends if they can find the error in the following proof.\n(it's obviously not right, but it looks cool!)\n\na=b\na+1 = b+1\n(a+1)^2 = (b+1)^2\na^2 + 2a +1 = b^2 + 2b +1\ncancel the ones and rearrange\na^2 - b^2 = 2(b-a)\n(a+b)(a-b) = 2(b-a)\ntherefore a+b = -2\nPick numbers for a and b\nand look!! 5 + 7 = -2\nThus shown.\nLOL
771836
Simple substitution.\n\n5(3) - 2(2) + 4(4)\n15 - 4 + 16\n27
1031270
x^2 + 5 + 5x + x y +5y\n\nx^2 + xy + 5x + 5y + 5\n\nx(x+y) + 5(x+y) + 5\n\nx(x+y) + 5(x+y+1)       OR     (x+5)(x+y)+5\n\nCynthia
1027973
the 3rd one is correct, but I get -(3+b)/b+2 and 2 for the first 2
759105
False... y has to be 2...\n(3,2) is a solution, but not (3,1).
619527
1st step: try for n = 1\n\nThen 1*2^1 = 2 and\n(1-1)*2^(1+1)+2 = 2\n\n2nd step: Assume true for n, show true for n+1.\n\nThen sum(i=1 to n) = (n-1)*2^(n+1)+2\nThen for n+1:\n\n(n-1)*2^(n+1)+2 + (n+1)2^(n+1)\n= (n-1 + n+1)2^(n+1)+2\n= 2n2^(n+1)+2\n= n2^(n+2)+2\n= ((n+1) - 1)*2^((n+1)+1) + 2\n\nThus it works.
538824
2 + 2 = 5 for moderately large values of 2
93238
You must be very confused. \n\n1+1 = 2 plus one more is 3
352513
true! Its fairly obvious by definition:\n\nfor example:\n2*5 = 5 + 5 = 2+2+2+2+2\n\nAn easier way to see this is through an invention by John Napier called Napier's Bones. He converted all complicated multiplications into simple addition
889713
3|(2x-1)/5| + 3 = 1?\nThats impossible. |anything| >= 0, so the LHS is >= 3. Did you mean something else?
809670
5 + 5 + 5 ≠ 550\n\nI'm not sure if that was the solution you were looking for though.\n\nEdit: nice job sunset!
523701
If you add the numbers together then they equal an even number.   1 1  1+1=2
1009395
4x + (x + 2) ....... 4x + 2 is 4 times a number plus 2 and it's incorrect