It's mostly because 1 and 01 and 0000000000000000000000000000000000001 are all the same number, but it works if you put a 0 before the last number when there is only 3 , cauz it's working with 52 53 and on until 60, then you need to ADD the second one to the other = 60-25 = 35 (this is 3500) 60-50 = (-)10x(-)10 = 100 35+100 doesn't equal 3600, but
3500
+ 100
______
3600
=]
try some like this and you'll see it always work
100(x-25)+(50-x)^2 = x^2
Let's walk through this.
100(x-25) = 100x - 2500
(50-x)^2 = 2500 -100x +x^2
Adding up the now multiplied terms gets us 100x-100x+2500-2500+x^2
This simplifies to x^2. Q.E.D.
100(x-25)+(50-x)^2 = x^2
Let's walk through this.
100(x-25) = 100x - 2500
(50-x)^2 = 2500 -100x +x^2
Adding up the now multiplied terms gets us 100x-100x+2500-2500+x^2
This simplifies to x^2. Q.E.D.
it does work with everything that is squared actually... you just don't know the formula. this is always how I show people how to square a number quickly. #mathnerd