គ្រុបគួរគណិតម៉ោង៖ ២-៣ រសៀល

 $ដោះស្រាយសមីការ\ \ \frac{x+3}{4}=2\ \ ។$  

• x=3

• x=5

• x=4

• x=-2

 $គណនាលីមីត\ \ \lim_{x\rightarrow0\ }\frac{\sin3x}{\tan5x}\ \ ។$  

•  $\frac{3}{5}$  

•  $3$  

•  $\frac{5}{3}$  

•  $\frac{4}{3}$  

 $គណនា\ \ \ \int_{ }^{ }\ x\left(x^2-1\right)^{2020}dx$  

•  $\frac{\left(x^2-1\right)^{2020}}{2021}+C$  

•  $\frac{1}{2}\times\frac{\left(x^2+1\right)^{2020}}{2020}+C$  

•  $\frac{1}{2}\times\frac{\left(x^2-1\right)^{2021}}{2021}+C$  

•  $\frac{1}{2021}\times\frac{\left(x^2-1\right)^{2021}}{2021}+C$  

 $a^2-b^2=?$  

•  $\left(b-a\right)\left(b+a\right)$  

•  $\left(a-b\right)\left(b+a\right)$  

•  $\left(b+a\right)\left(b+a\right)$  

•  $\left(b-a\right)\left(a^2+ab+b^2\right)$  

 $គេមាន\ \ \overrightarrow{u}\left(2,1,1\right)\ និង\ \ \overrightarrow{u}\left(-1,0,3\right)\ ។\ គណនា\ \ \overrightarrow{u}\cdot\overrightarrow{v}\ \ ។$  

•  $\ \overrightarrow{u}\cdot\overrightarrow{v}=0$  

•  $\ \overrightarrow{u}\cdot\overrightarrow{v}=-3$  

•  $\ \overrightarrow{u}\cdot\overrightarrow{v}=1$  

•  $\ \overrightarrow{u}\cdot\overrightarrow{v}=-2$  

 $\left(a+b-c\right)^2=...?$  

•  $a^2+b^2+c^2+2ab+2ac-2bc$  

•  $a^2+b^2+c^2+2ab+2ac+2bc$  

•  $a^2+b^2+c^2+2ab-2ac+2bc$  

•  $a^2+b^2-c^2+2ab+2ac-2bc$  

មាឌនៃតេត្រាអ៊ែត V=....?

• $v=\frac{1}{3}បាត\timesកំពស់$

• $v=\frac{1}{3}ក្រឡាផ្ទៃបាត\timesកំពស់$

• $v=\frac{1}{2}បាត\timesកំពស់$

• $v=បណ្ដោយ\timesទទឹង$

ក្រឡាផ្ទៃត្រីកោណ S=...?

• $S=បាត\timesកំពស់$

• $S=\frac{1}{3}បាត\timesកំពស់$

• $S=\frac{1}{2}បាត\timesកំពស់$

• $S=ទទឹង\timesបណ្ដោយ$