[tex]0,01:10^{-3}+\left(2-\sqrt{7}\right)^{2}-0,12:\dfrac{3}{10^3} =[/tex]
[tex]=10^{-2}:10^{-3}+\left(2-\sqrt{7}\right)^{2}-12\cdot 10^{-2}\cdot \dfrac{10^3}{3}[/tex]
[tex]=10^{-2-(-3)}+\left(2-\sqrt{7}\right)^{2}-\dfrac{12}{3}\cdot 10^{-2+3}[/tex]
[tex]=10^{-2+3}+\left[2^2-2\cdot 2\cdot \sqrt{7}+\left(\sqrt{7}\right)^2\right]-4\cdot 10[/tex]
[tex]=10+\left(4-4 \sqrt{7}+7\right)-40[/tex]
[tex]=10+11-4\sqrt{7} - 40[/tex]
[tex]=21-40-4\sqrt{7}[/tex]
[tex]=\boxed{-19-4\sqrt{7}}[/tex]
