Đề thi HK1 Toán 8 - Huyện Thanh Trì - Hà Nội - Năm...

A $- {\left( {x + 6} \right)^2}$

B

${\left( { - x - 6} \right)^2}$

C  ${\left( { - x + 6} \right)^2}$

D     $- {\left( {x - 6} \right)^2}$

A $\frac{{3x + 1}}{{3x - 3}}$

B $\frac{{x + 1}}{{x - 3}}$

C $1$

D $\frac{{3x - 5}}{{3\left( {3x - 3} \right)}}$

A $- 16{y^3}$

B $- 4{y^3}$

C $16{y^3}$

D $- 12{y^3}$

A $50$

B $34$

C $32$

D $30$

A $\sqrt {18} \,cm$

B $18\,cm$

C $3\,cm$

D $4\,cm$

A $30\,{m^2}$

B $45\,{m^2}$

C $90\,{m^2}$

D $75\,{m^2}$

A ${35^0}$

B ${45^0}$

C ${55^0}$

D Không tính được.

A Hình thang cân

B Hình chữ nhật

C Hình thoi

D Hình vuông

A $\begin{array}{l}a)\,\,\left( {y + 2} \right)\left( {6x - 4} \right)\\b)\,\,\left( {x + 2} \right)\left( {x + 1} \right)\left( {x - 1} \right)\end{array}$

B $\begin{array}{l}a)\,\,\left( {y - 2} \right)\left( {6x - 4} \right)\\b)\,\,\left( {x + 2} \right)\left( {x + 1} \right)\left( {x - 1} \right)\end{array}$

C $\begin{array}{l}a)\,\,\left( {y - 2} \right)\left( {6x - 4} \right)\\b)\,\,\left( {x + 2} \right)\left( {{x^2} - 1} \right)\end{array}$

D $\begin{array}{l}a)\,\,\left( {y - 2} \right)\left( {6x + 4} \right)\\b)\,\,\left( {x - 2} \right)\left( {x + 1} \right)\left( {x - 1} \right)\end{array}$

A $b)\,\,\left[ \begin{array}{l}x = 1\\x =  - 1\end{array} \right.$

B $b)\,\,\left[ \begin{array}{l}x = 2\\x =  - 2\end{array} \right.$

C $b)\,\,x = 0$

D $b)\,\,\left[ \begin{array}{l}x = 3\\x =  - 3\end{array} \right.$

A $\begin{array}{l}a)\,\,\frac{{2\left( {x + 3} \right)}}{{x\left( {x - 3} \right)}}\\b)\,\,\frac{4}{{x - 1}}\end{array}$

B $\begin{array}{l}a)\,\,\frac{2}{x}\\b)\,\,\frac{4}{{x + 1}}\end{array}$

C $\begin{array}{l}a)\,\,\frac{1}{x}\\b)\,\,\frac{4}{{x - 2}}\end{array}$

D $\begin{array}{l}a)\,\frac{2}{{x - 3}}\\b)\,\,\frac{1}{{2 - x}}\end{array}$

A $\frac{{2018}}{{2017}}$

B $\frac{{1009}}{{2017}}$

C $\frac{{1009}}{{4034}}$

D $\frac{1}{{2017}}$