Nan ơi giúp plsssss
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3 tháng 11 2021
a) \(=3\left(xy-4\right)\)
b) \(=x^2\left(x-y\right)+4\left(x-y\right)=\left(x-y\right)\left(x^2+4\right)\)
c) \(=x^2-\left(y^2-12y+36\right)=x^2-\left(y-6\right)^2=\left(x-y+6\right)\left(x+y-6\right)\)
d) \(=\left(4p^2-36p+81\right)-25=\left(2p-9\right)^2-25=\left(2p-9-5\right)\left(2p-9+5\right)=4\left(p-7\right)\left(p-2\right)\)
DT
Đỗ Thanh Hải
CTVVIP
10 tháng 8 2021
1 saw - didn't see - was looking
2 met - went - went - had - were waiting
3 was cycling - stepped - was going - managed - didn't hit
4 was waiting - arrived
5 were you doing
6 Did you go
7 wore
8 were you driving - happened
9 took - wasn't looking
10 were - didn't know
NB
1
Sorry, mình không biết làm phần Task 1 nhaaa :<<<
Task 2: Complete the sentences using PAST SIMPLE TENSE.
1. didn't like
2. phoned
3. went
4. Did they leave
5. Did you like
6. didn't finish
7. Did she go
8. stayed / got
9. went
10. Did you travel
Chúc bạn học tốt!! ^^
thank