(X+5)2

To expand the expression \((X + 5)^2\), you can use the formula for the square of a binomial, which states that \((a + b)^2 = a^2 + 2ab + b^2\).

In this case, let \(a = X\) and \(b = 5\).

Now, applying the formula:

\[ (X + 5)^2 = X^2 + 2(X)(5) + 5^2 \]

Calculating each term:

1. \(X^2\) remains \(X^2\).
2. \(2(X)(5) = 10X\).
3. \(5^2 = 25\).

Putting it all together:

\[ (X + 5)^2 = X^2 + 10X + 25 \]

So, the expanded form of \((X + 5)^2\) is:

\[ X^2 + 10X + 25 \]