Ai còn thức giúp e vs ạ mai e thi
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II Grammar and....
choose the correct answer
3.D
4.A
5.B
6.C
7.C
8.C
C.Reading
read the...
1.B
2.C
3.D
4.B
1 A
2 C
3 C
4 C
5 B
5 C
5 B
6 A
C
I
1 - C
2 - D
3 - B
4 - A
II
1 People of ethnic minorities
2 In March of every year
3 Money and other things
4 No, they aren't
5 Around all the villages
D
1 play volleyball
2 are 50 teachers and 800 students in my school
3 terrible weather
4 works fewer hours than ,e
II
1 performance
2 cultural
3 seasonal
4 carelessly
\(A\left(x\right)+B\left(x\right)=3x^4-4x^3+2x^2-3+8x^4+x^3-9x+\dfrac{2}{5}\)
\(=11x^4-3x^3+2x^2-9x-\dfrac{13}{5}\)
\(A\left(x\right)-B\left(x\right)=3x^4-4x^3+2x^2-3-8x^4-x^3+9x-\dfrac{2}{5}\)
\(=-5x^4-5x^3+2x^2+9x-\dfrac{17}{5}\)
\(B\left(x\right)-A\left(x\right)=8x^4+x^3-9x+\dfrac{2}{5}-3x^4+4x^3-2x^2+3\)
\(=5x^4+5x^3-2x^2-9x+\dfrac{17}{5}\)
a) Ta có: \(P\left(x\right)=3x^5-2x^4-2x^5-2x^2-x+3x^2+2\)
\(=x^5-2x^4+x^2+2\)
Ta có: \(Q\left(x\right)=x^5+8-5x+3x^3+3x+x^4-4x^5\)
\(=-3x^5+x^4+3x^3-2x+8\)
b) \(P\left(x\right)+Q\left(x\right)=x^5-2x^4+x^2+2-3x^5+x^4+3x^3-2x+8\)
\(=-2x^5-x^4+3x^3+x^2-2x+10\)
\(P\left(x\right)-Q\left(x\right)=x^5-2x^4+x^2+2+3x^5-x^4-3x^3+2x-8\)
\(=4x^5-3x^4-3x^3+x^2+2x-6\)
II
1 A
2 B
3 A
4 B
I
1 carefully
2 careful, you will fall off your bicycle
3 to wash clothes by hand
4 the largest city in population, isn't it
2
1 How often is the flower festival celebrated
2 what do you always have on THanksgiving
3 Who did Peter when to Da nang last month with?
4 Whose are these picture?
không có mẹo gì cả, chỉ có cần bạn ôn thì làm bài sẽ tốt thôi ^^