Viết chương trình tích
a. B=10*11*12....*29*30
b . C= 50+51+52+...+100
c.D = (-50)+(-49)+(-48)+...+50
d. E=1/1*3+1/2*4+1/3*5+...+1/n*(n+2)

Việc làm gây hại cho hệ bài tiết nước tiểu là

1. Đá bóng vào sáng sớm

2. Tắm vào buổi sáng

3. Ăn nhiều muối vào buổi sáng

4. Ít tắm nắng vào buổi sáng

Giúp tớ vớiiiii tớ cần gấp

Giải phương trình
a)4(x-3)2=9(2-3x)2
b)+=
c)3,6-0,5(2x-1)=3x-0,25(3-4x)
d)-1=-
Các cậu làm rõ từng bước ra giúp tớ nhaa ^^

Giải phương trình
a)4(x-3)²=9(2-3x)^{2
b)\(\frac{x+1}{x-1}\)+\(\frac{x^2+3x-2}{1-x^2}\)=\(\frac{x-1}{x+1}\)
c)3,6-0,5(2x-1)=3x-0,25(3-4x)
d)\(\frac{2-x}{2008}\)-1=\(\frac{1-x}{2009}\)-\(\frac{x}{2010}\)
Help mee ^^}

Combine the two sentences to complete the sentences.

1) I'll never forget the day. I met you then.(when)
→
2)It was cold. However, Tom still went swimming.(although)
→
3)John is very sad. He fails the final exam .(because)
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4)He never left the house.He had been born there.(where)
→
5)I met the man . He works in a bank.(who)
→
6)Here are the letters.They arrived this morning.(which)
→
7)My grandfather is very old.He is still young at heart.(although)
→
8)Tom gets a lot of money . He works hard.(because)
→

Help me -.-

Environmental pollution is a term that (1)........ to all the ways by which man pollutes his surroundings. Man dirties the air with exhaust gases and smoke, (2)......... the water with chemicals and other substances, and damages the (3) …..with too many fertilizers and pesticides. Man also pollutes his surroundings in various other ways. For example, people ruin natural beauty by scattering junk and litter on the land and in the water.