E=(\(\dfrac{a+1}{a-1}-\dfrac{a-1}{a+1}+4a\))-\(\dfrac{1}{2a^3}\)

tìm đkxđ và rút gọn

tìm A để E=a

last week Vicky went her see her grandparent in the countryside

viết đoạn văn

viết tiếp đoạn văn

what đi you do for your birthday Jane. Luci ask her friend

1. these two dictionaries are similar. little

there...............................................these two dictionaries

2.my first editor greatly influenced me. influence

my first editor......................................me

3.they described the robber on the evening news. gave

they ................................................... the robber on the evening news

4.robert maxdoch has just bought the newspaper. control

the newspaper is now.............................................robert maxdoch

5.you'll be wasting your time if you try to get tickets for that show. point

there..............................................................to get tickets for that show

6.i believe that adverts to influence people's buying habits. view

it...........................................................................that adverts to influence people's buying habits.

7.the prime minister will probably mkae a statement this afternoon. likely

.the prime minister .........................................a statement this afternoon

8.a program about the royal family will be shown instead of friend this evening place

this evening ......................................................................friend,.a program about the royal family will be shown

1. these two dictionaries are similar. little

there...............................................these two dictionaries

2.my first editor greatly influenced me. influence

my first editor......................................me

3.they described the robber on the evening news. gave

they ................................................... the robber on the evening news

4.robert maxdoch has just bought the newspaper. control

the newspaper is now.............................................robert maxdoch

5.you'll be wasting your time if you try to get tickets for that show. point

there..............................................................to get tickets for that show

6.i believe that adverts to influence people's buying habits. view

it...........................................................................that adverts to influence people's buying habits.

7.the prime minister will probably mkae a statement this afternoon. likely

.the prime minister .........................................a statement this afternoon

8.a program about the royal family will be shown instead of friend this evening place

this evening ......................................................................friend,.a program about the royal family will be shown

cho tam giác ABC vuông tại A; AH vuông góc với BC

CMR: \(AH^2=HB.HC\)

\(AB^2=BC.BH\)

\(AC^2=CB.CH\)

AH.BC=AB.AC

\(\dfrac{1}{AH^2}=\dfrac{1}{AB^2}+\dfrac{1}{AC^2}\)