Mark four numbers forming a square in a calendar:

Add the squares of the diagonal pair and find the difference of these sums:

4² + 12² = 160

11² + 5² = 146

160 – 146 = 14

Do this for other four numbers.

Compute the following differences:

(11.3 × 10.7) – (11.7 × 10.3)

Compute the following differences:

(11.3 × 10.7) – (11.7 × 10.3)

Mark four numbers forming a square in a calendar:

Add the squares of the diagonal pair and find the difference of these sums:

4² + 12² = 160

11² + 5² = 146

160 – 146 = 14

Do this for other four numbers.

Mark four numbers forming a square in a calendar:

Add the squares of the diagonal pair and find the difference of these sums:

4² + 12² = 160

11² + 5² = 146

160 – 146 = 14

Explain using algebra, why the difference is 14 always.