Simplify the following expression through distribution and combining like terms
1. 2x + (3 + 5x) (4x)
2. 2x(x + 4) – 5x²
3. – 4(5x + 2) – 3x
4. 5 – 2(x + 8)
5. 5x – 2x(x + 7)
6. -4(5x + 2) – 3x
7. (3x + 1)(-4) + x
8. 2x² + (3 - 5x)(5x)
9. 6 + 2(3x - 8) + x
10. 2(3x – 5) – 2x
11. – 2x(x - 7y) + (-5x²)
12. 4 – 3(2x – 8) – 2x
13. -4x(5x + 2) – 3x
14. 5x – 2x (x – 3)
15. – 3y + y (y + 1) – y2