Question

(x+y)whole square ??

Answer 1

Step-by-step explanation:

$(x + y) {}^{2}$

${x}^{2} + {y}^{2} + 2 \times x \times y$

Answer 2

The Introduction is given.

The above person has given the formula.

Use of it:

The square of sum of two terms identity is used as a formula in mathematics in two cases.

The product of two same sum basis binomials is expanded as sum of squares of the terms and twice the product of both terms.

The summation of squares of two terms and two times the product of same terms is simplified as the square of sum of them.