1. Find the value of the expression 4x - 3 for x = 1

2. Find the value of the expression 100 - 10 x 3 for x = 0

3. Find the value of the expression 5n - 3 for n = -1

4. Find the value of the expression x² + 2x + 1 for x = - 1

5. Find the value of the expression a + b for a = 1, b = 2

6. Find the value of the expression a² - 2ab + b² for a = 1, b = 1

7. Find the value of the expression a² - b² for a = 2, b = 1

8. Find the value of the expression a² + b² for a = 1, b = 0

9. Find the value of the expression a² + ab + 1 for a = 0, b = 1

10. Find the value of the expression 3x + 5 (x - 2) for x = 2