Turn into passive voice:

1. What do you have to send them?

->What has to be sent to them?

2. What often ???helps people in life?(câu này tối nghĩa quá ,có thể b gõ sai,cmt dưới

->

(2x + 5)²⁰¹⁶ + (5y - 4)²⁰¹⁶ luôn \(\ge0\)

Mà theo đề: \(\left(2x+5\right)^{2016}+\left(5y-4\right)^{2016}\le0\)

=> (2x + 5)²⁰¹⁶ = (5y + 4)²⁰¹⁶ = 0

Đề đã cho x = -2,5

=> 5y + 4 = 0

=> 5y = -4

=> y = -4/5

Số thập phân năm trăm ba mươi tám phẩy tám trăm ba mươi lăm viết là:538,835

1 , The sea serves the need of man because ...............

A. it provides man with sea food

B .it offers oil to man

C. it supplies man with mineral

D.all of the above

2, we can conclude from the passage that

A. The sea resources have largely been used up

B .the sea , in a broad seense , hasn't yet been developed

C. By the year 2050 ,the technology will be good enough to exploit all the sea resources

D.The problems that prevent us from fully exploting the sea have already been solved

mỗi người bù trừ cho nhau ,ai cũng có cái sai :<