If A and B are square matrices of the same order such that `A B=B A` , then show that `(A+B)^2=a^2+2A B+B^2`

Explanation

To show that \((A + B)^2 = A^2 + 2AB + B^2\) given that \(AB = BA\), we can follow these steps:

### Step-by-Step Solution:

1. **Start with the expression \((A + B)^2\)**:
\[ (A + B)^2 = (A + B)(A + B) \]
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