EXPLANATION
The mathematical operation utilized is the square of a binomial distributive property as shown as follows:
(4+3)^2=
![4^2+2\cdot4\cdot3+3^2](https://img.qammunity.org/2023/formulas/mathematics/college/x53fhkjwmbojzc7qorymof4xhaeeb9uu91.png)
The square of a binomial is the sum of the square of the first terms, twice the product of the two terms, and the square of the last term.