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### 2. Rewrite the following positive integers:
a. \( (-2x)^3 \)
b. \( (-2x^2)^3 \)
c. \( -5a^4 \)
d. \( \frac{3b^2}{2x^3} \)
e. \( \left( \frac{xy}{z^3x^2} \right)^2 \)

### 3. Simplify the following expressions to positive powers:
a. \( \left( \frac{625 a^{12}b^6c^2}{5a^4b^5} \right)^2 \)
b. \( \left( \frac{3x^2y^3}{24b^4} \right)^3 \cdot \left( \frac{16a^6b^6}{27x^3y} \right)^2 \)
c. \( \frac{a^7 + b^7}{a^4 + b^2} \)
d. \( \frac{2^3 + 3^2}{2^2 + 3^3} \)

#### Solutions:

**2a. \( (-2x)^3 \):**
\[
= -8x^3
\]

**2b. \( (-2x^2)^3 \):**
\[
= -8x^6
\]

**2c. \( -5a^4 \):**
\[
= -5a^4 \quad (\text{Already simplified})
\]

**2d. \( \frac{3b^2}{2x^3} \):**
\[
= \frac{3b^2}{2x^3} \quad (\text{Already simplified})
\]

**

Tuliskan bilangan-bilangan berikut dalam bentuk bilangan bulat positif. Sederhanakan bentuk-bentuk berikut dalam bentuk pangkat bulat positif.

Learn how to simplify algebraic expressions with positive integer exponents. This problem involves applying exponentiation rules and simplifying complex fractions and expressions. Suitable for Grades 10-12.

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