If `p` square `x` square minus `Q ` square is equals to zero then `X` is equals to​

Prove that the sum of the squares of the diagonals of a rhombus is equal to the sum of the squares of the sides.

Prove that the sum of the squares of the diagonals of parallelogram is equal to the sum of the squares of its sides.

If a square matrix A is involutory, then A^(2n+1) is equal to

Square a square is a rectangle with a pair of adjacent side equal.

Prove that the sum of the squares of the sides of a rhombus is equal to the sum of the squares of its diagonals.

The total area of the non-triangle regions in the figure below (the shaded area) is equal to ((p)/(q)) square units,where p and q are coprime natural numbers then p+q is equal to