6.C

7.A

8.D

9.A

10.A

đâu có câu b đâu??

Phân tích đa thức sau thành nhân tử:

\(6x^2+13x+5\)

đề??

d)\(x^2-10x=-25\)

\(x^2-10x+25=0\)

\(\left(x-5\right)^2=0\)

\(\Rightarrow x-5=0\)

\(\Leftrightarrow x=5\)

Vậy........

c)\(x^2-12x=-36\)

\(x^2-12x+36=0\)

\(\left(x-6\right)^2=0\)

\(\Rightarrow x-6=0\)

........

6)\(\left(3x+2\right)^2-4=0\)

\(\left(3x+2\right)^2-2^2=0\)

\(\left(3x+2-2\right)\left(3x+2+2\right)=0\)

\(3x\left(3x+4\right)=0\)

\(\Rightarrow\left\{{}\begin{matrix}3x=0\\3x+4=0\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}x=0\\x=\dfrac{-4}{3}\end{matrix}\right.\)

Vậy...

1. That house is more historic than this building

2. That book is worse than this book

3. Your neighbourhood is quieter than my neighbourhood

4. Lan is happier than Nga

5. My sister is shorter than my brother

6. My shoes are bigger than her shoes

7. That river is cleaner than this river

8. That table is shorter than this table

9. My father is older than my mother.

10. My car is more expensive than his car