Tính giá trị của biểu thức
a) M = 26x² + y(2x + y) -10x(x+ y) biết x= 0,25y
b) N = 50y² + x.(x - 2y) + 14y(x – y) biết x + 6y = 9

EX1: Complete the second sentence so that it has a similar meaning to the first,using the word given.Do not change the word given.You must use between two and five words,including the word given
1. Tom is so tall that you always noitice him in a crowd (OUT)
-> Tom is so tall that he _________ in a crowd.
2. The last time I played tennis was in March (SINCE)
-> I __________ March
3.I t takes ten minutes car to get from the shopping centre to our house (DRIVE)
-> Our house is _________ from the shopping centre 
4. I couldn't get to work on time because is was so much traffic. (OF)
-> There was ___________, so I couldn't get to work on time 
5. I bought this car a year ago (HAD)
-> I _________ for a year
6. Jenny started doing her homework an hour ago (BEEN)
-> Jenny ________ for an hour

 

 EX1: Complete the second sentence so that it has a similar meaning to the first,using the word given.Do not change the word given.You must use between two and five words,including the word given
1. I am certain that this syrup will have a good effect on your sore throat. (DO)
-> I am certain that this syrup ___________ for your sore throat.
2. You have to work hard to compensate for the lost time.(MAKE)
-> You have to work hard to ___________ the time you have lost.
3My brother has annoying habit of leaving his clothes lying around (ALWAYS)
 ->My brother __________ his clothes lying around.
4. I haven't heard from Jason for two week. (TIME)
-> The______________ Jason was two weeks ago.
5.We still haven't decided where to go on holiday.(UP)
-> We still haven't _____________ about where to go on holiday.
6. I didn't expect things to happen the way they did. (OUT) 
-> I didn't expect ___________ the way they did.