Tính giá trị biểu thức

To solve the math problems you’ve presented, we can break them down one by one. Here's how you can approach each task:

### Bài 8: Tính giá trị biểu thức

a) \( \frac{12^2}{4^6} - 25^{0} - 5^{4} \)

- Calculate each term:
- \( 12^2 = 144 \)
- \( 4^6 = 4096 \)
- \( 25^0 = 1 \)
- \( 5^4 = 625 \)
- Now substitute values:
\[
\frac{144}{4096} - 1 - 625
\]
- Calculate \( \frac{144}{4096} = 0.03515625 \)
- Now combine:
\[
0.03515625 - 1 - 625 \approx -626.96484375
\]

b) \( \frac{1}{3}(x + 1) + 5 \left( 2 - \frac{1}{3} \right) - 2x \)

- Simplify:
\[
\frac{1}{3}(x + 1) + 5\left(\frac{6 - 1}{3}\right) - 2x = \frac{1}{3}(x + 1) + \frac{25}{3} - 2x
\]
- Combine and simplify further.

c) \( \left(\frac{1}{3}\right)^{3} - \frac{10}{9} \)

- Calculate:
\[
\frac{1}{27} - \frac{10}{9} = \frac{1 - 30}{27} = -\frac{29}{27}
\]

d) \( \left(2 - \frac{9}{8}\right)2|x - 2| - \left(\frac{9}{7} - \frac{2}{14}\right) \frac{3}{7} = 1 \)

- Break this down carefully and solve for \( x \).

### Bài 9: Tim x, y, z biết

For this part, I need to see specific equations or expressions involving \( x, y, z \) to assist you further.

### Bài 10: Tính góc ABC

If \( BAE + AED = CDE \), use geometry principles such as triangle properties and angles sum.

### Bài 11

Given that \( MA \parallel PB \):
- Find angle \( MNP \) using the property of parallel lines.

### Bài 12: Tính góc ABC

For angles \( A, B, C \), use the fact that the sum of angles in a triangle equals 180°.

If you can provide a summary or specific equations for parts of Bài 9, I can help further!