Question

\(\frac{x+2106}{-3}=\frac{-12}{x+2106}\)

Answer 1

\(\frac{x+2106}{-3}\)= \(\frac{-12}{x+2106}\)

=> (x+2106)^2 = 36                    (nhân chéo nha bạn )

=> (x+2106)^2=6^2

=> x+2106=6

=> x=-2100

Answer 2

x+2106 . x+2106=-3X12

\(^{X+2106^2}\)=-36

(x+2106)\(^2\)=6\(^2\)hoặc (-6)\(^2\)

x+2106=6 hoặc x+2106=(-6)

x         =6-2106 hoặc x        =(-6)-2106

x= -2100  hoặc x= -2112