I see you've uploaded an image containing a set of math problems. I'll help you by addressing the solutions to these questions.

1. Question 4: The decimal representation of $5 + \sqrt{2}$ is a non-terminating non-recurring decimal.
   Answer: (c)

2. Question 5: The coefficient of $x^2$ in $(x^2 + 2)^3$.
   Expanding $(x^2 + 2)^3$ gives terms where the coefficient of $x^2$ is 12.
   Answer: (c)

3. Question 6: The zero of the polynomial $7 + 3x$ is found by solving $7 + 3x = 0$.
   Solving gives $x = -\frac{7}{3}$.
   Answer: (b)

4. Question 7: Solving $x - 15 = 25$ gives $x = 40$. Which of Euclid's axioms is used to solve it?
   This uses the axiom: If equals are subtracted from equals, the remainders are equal.
   Answer: (d)

5. Question 8: The point that lies on the line representing $y = 3x$.
   Substituting each option in $y = 3x$, only (2, 6) satisfies the equation.
   Answer: (a)

6. Question 9: The distance between points A (4, 0) and B (0, 3) is given by the distance formula:
   $d = \sqrt{(4-0)^2 + (0-3)^2} = \sqrt{16 + 9} = \sqrt{25} = 5$
   Answer: (a)

7. Question 10: "A terminated line can be produced indefinitely" is a postulate.
   Answer: (d)

8. Question 11: If the measure of an angle is 5 times its complement, let the angle be $x$ and its complement be $90^\circ - x$.
   $x = 5(90^\circ - x)$
   Solving this gives $x = 75^\circ$.
   Answer: (d)

9. Question 12: In the given figure, if $AB \parallel DE$, the angle $x$ can be found using the parallel line properties. The answer is 75°.
   Answer: (d)

Would you like more detailed solutions or explanations? Here are 5 questions for further practice:

1. How do you expand and simplify binomial expressions?
2. What is the method for solving polynomials for their zeros?
3. How do you determine the distance between two points in a coordinate plane?
4. What are Euclid's five axioms in geometry?
5. How do complementary angles work in geometry?

Tip: Always verify results by substituting your solution back into the original equation, especially when solving polynomials or algebraic equations!