1, Tìm tổng các hệ số của đa thức nhận đc sau khi bỏ dấu ngoặc trog bt

\(A\left(x\right)=\left(3-4x+x^2\right)^{2018}.\left(3+4x+x^2\right)^{2019}\)

tìm nghiệm của đa thức f(x) = \(2x^3+5x^2-x-6\)

tìm nghiêm đa thức sau

\(-4x^3+2x^2-8x^2y.\left(4y-1\right)\)

chứng tỏ A ko dương

A = \(\dfrac{-1}{2}.x^8.y^{16}\)

rewrite the sentences with BECAUSE OF

1. She can not work hard because she is very old

2. He likes her because she is very beautiful

3. He couldn't go to school because he was very poor

4. I can't buy this bike because I don't have enough money

5. He broke the vase because he was careless

6. He failed the exam because he didn't learn the lessons carefully

7. We can't go for a walk because it rains heavily

8. He left school because his life was hard

9. She was very happy because she was given a new bike

10. I went to bad early because I felt tired

rewite sentences

1. They will plant more trees along this street. → More-----------------

2. His sister drives carefully .→His sister is-------------------

3. Is it possible to go to Sa Pa by motorbike .→ Can we-----------------

4, He forgot to turn off the computer last night , didn't he ? → He didn't -----------------

Tìm a,b,c biết \(\dfrac{5a-4b}{6}=\dfrac{6b-5c}{4}=\dfrac{4c-6a}{5}\) và a + b + c =45

cho A = \(x^{10}-2004x^9+2004x^8+...-2004x-1\)

tính A khi x =2003