linh tinh mất dạy quá

duyet nha

thang thuốc 

duyệt nhé

Thêm 7 đơn vị bạn nhe

362880

          duyệt đi, cô gái dịu dàng.

1% của 500=5 nha bạn

So be la: (2469-1):2=1234

Dap so :1234

Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions.

How many people know that the Brooklyn Bridge, built in 1883, were the world's first suspension bridge?

A. the Brooklyn Bridge

B. built in 

C. were

D. suspension bridge

Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions.

The innovators behind objects like the cellphone or the helicopter took inspiration from work like "Star Trek" and “War of the Worlds”.

A.innovators

B. objects like

C. or the helicopter

D. work

Ta có : M =\(\sqrt{\left(5x\right)^2-2.2.5x+2^2}+\sqrt{\left(5x\right)^2}\)= \(\sqrt{\left(5x-2\right)^2}+\left|5x\right|\) = \(\left|5x-2\right|+\left|5x\right|=\left|2-5x\right|+\left|5x\right|\ge\left|2-5x+5x\right|=\left|2\right|=2\)

=> M ≥ 2

Min M = 2 : dấu"="xảy ra khi: ....

Mình bận rồi tự làm tí nhé!!