What is 111--1+-+1-1+2---2-+1-2--3+4+5+5555 555555555+4++3+33+4444444444444 33445555555555543+3++45---56++78+90 987678ui90-=-09876567890-=-09877+++ ---0-84

12−02=1

62−52=11

202−172=111

562−452=1,111

1562−1152=11,111

To me, this is where it gets interesting:

3442−852=5562−4452=3562−1252=111,111.

My question: Is 111,111 the first number with only 1s as digits that can be represented as a difference of 2 squares in 3 different ways? Or, can 1,11,111,1111or11111 be written as u2−v2=w2−x2=y2−z2, where u,v,w,x,y,z are all unique?

I lack the knowledge to write a computer program that would check possible solutions for me. Can anyone either prove that the previous numbers can't be written as I've stated or find a counterexample?

Step-by-step explanation:

Are u okay?

Step-by-step explanation:

14 ft 7 inches

step-by-step explanation:

since each model inch corresponds to 25 real inches, 7 model inches will correspond to

7×25" = 175"

at 12" per foot, that is 14 feet, 7 inches.