hihi cảm ơn nha

100+56=156

h nha Công Chúa Kiêu Kì

mh h rồi

56+65=121

a)2

b)\(\frac{-11}{4}\)

12+12=24

k nha  luluha sagashi

\(A=\left\{16;27;38;49\right\}\)

\(B=\left\{41;82\right\}\)

\(C=\left\{59;68\right\}\)

Vậy ................

12x10=120

k nha luluha sagashi

Ư(48;13)=1

Ư(6;7)=1

Ư(15;16)=1

Ư(9;20)=1

Ư(15;8)=1

Ư(16;25)=1

\(2\left(x-2\right)=x\left(x-2\right)\)

\(\Rightarrow2\left(x-2\right)-x\left(x-2\right)=0\)

\(\Rightarrow\left(x-2\right)\left(2-x\right)=0\)

\(\Rightarrow\orbr{\begin{cases}x-2=0\\2-x=0\end{cases}\Rightarrow x=2}\)