Answer :

Let's simplify and analyze these two algebraic expressions step-by-step.

### Expression 1: [tex]\(2 x^2 (x + 2) (x - 2)\)[/tex]

First, let's simplify the given expression:

[tex]\[2 x^2 (x + 2) (x - 2)\][/tex]

Notice that [tex]\((x+2)(x-2)\)[/tex] is a difference of squares. We can simplify this part as follows:

[tex]\[(x+2)(x-2) = x^2 - 4\][/tex]

Substituting this back into the expression, we have:

[tex]\[2 x^2 (x^2 - 4)\][/tex]

This is the simplified form of the first expression. Thus:

[tex]\[2 x^2 (x^2 - 4)\][/tex]

### Expression 2: [tex]\(4 x (x + 2)\)[/tex]

Next, let's simplify the second given expression:

[tex]\[4 x (x + 2)\][/tex]

Distribute [tex]\(4x\)[/tex] across the terms in the parentheses:

[tex]\[4 x \cdot x + 4 x \cdot 2 = 4 x^2 + 8x\][/tex]

So, the simplified form of the second expression is:

[tex]\[4 x^2 + 8x\][/tex]

### Final Results

After simplifying both expressions, we have:

1. [tex]\(2 x^2 (x^2 - 4)\)[/tex]
2. [tex]\(4 x (x + 2)\)[/tex]

Thus, the simplified forms of the given expressions are:

[tex]\[2 x^2 (x^2 - 4) \quad \text{and} \quad 4 x (x + 2)\][/tex]