1 - 2 - 3 - 4 - 6 - 5

em nghĩ nó sẽ giúp quan sát dễ hơn, giúp người đọc dễ tiếp thu thông tin từ bài trình chiếu hơn

Vì chữ màu vàng k nổi bật trên nền trắng, dễ gây việc khó nhìn

Before the flood, my family usually watched the news about it first, then moved our belongings to a higher place. We also stocked up on food and water. During the storm, we usually stayed at home or went to help those in need as instructed by the authorities, and turned off the electrical appliances when it was dangerous. After the storm, my family and I cleaned up the house. That was it. 

Before the flood, my family usually watched the news about it first, then moved our belongings to a higher place. We also stocked up on food and water. During the storm, we usually stayed at home or went to help those in need as instructed by the authorities, and turned off the electrical appliances when it was dangerous. After the storm, my family and I cleaned up the house. That was it. 

B= 1/ x²-4x+4+5

B= 1/(x-2)² + 5

a) A= x² - 2x + 1/ x² - 1

A= (x-1)²/(x-1)(x+1)

A=x-1/x+1

b) thay x=3 vào A (thỏa mãn đkxđ) ta được

A=3-1/3+1

A=1/2

thay x=-3/2 vào A (thỏa mãn đkxđ) ta được

A = -3/2-1/-3/2+1

A=5

a)7x + 2 = 0

7x = -2

x = -2/7

vậy nghiệm của pt trên là -2/7

b) 18 - 5x = 7 + 3x

18 - 5x - 7 - 3x = 0

11-8x = 0

-8x = -11

x = 11/8

vậy nghiệm pt trên là 11/8