Pasagot po thank you

Answer:
11. 3x² + 6 = x
3x² + 6 - x = 0
3x² - x + 6 = 0
12. 10x² = 144
10x² - 144 = 0
13. 1/3(h - 18) = 0
1/3h - 18/3 = 0
14. 5 = 15y - y²
5 - 15y + y² = 0
y² - 15y + 5 = 0
15. 2x(x - 8) = 10
2x² - 16x = 10
2x² - 16x - 10 = 0