- #1
mepcotterell
- 21
- 0
take any number, for example X and try and square it...
first let Y = X rounded up the nearest power, not multiple, of 10
[ X - (Y - X) ] * Y + (Y - X)^2 = X^2
it should work every time...
let X = 998
[ 998 - (1000 - 998) ] * 1000 + (1000 - 998)^2
[ 998 - 2 ] * 1000 + 2^2
996 * 1000 + 4
996000 + 4
996004
998^2 = 996004
you can do it for any number and it should work...
like 9999999999999999999999999999^2 is equal to 99999999999999999999999999980000000000000000000000000001
first let Y = X rounded up the nearest power, not multiple, of 10
[ X - (Y - X) ] * Y + (Y - X)^2 = X^2
it should work every time...
let X = 998
[ 998 - (1000 - 998) ] * 1000 + (1000 - 998)^2
[ 998 - 2 ] * 1000 + 2^2
996 * 1000 + 4
996000 + 4
996004
998^2 = 996004
you can do it for any number and it should work...
like 9999999999999999999999999999^2 is equal to 99999999999999999999999999980000000000000000000000000001