Question

Cine poate să mă ajute ❤️❤️❤️

Answer 1

$0,01:10^{-3}+\left(2-\sqrt{7}\right)^{2}-0,12:\dfrac{3}{10^3} =$

$=10^{-2}:10^{-3}+\left(2-\sqrt{7}\right)^{2}-12\cdot 10^{-2}\cdot \dfrac{10^3}{3}$

$=10^{-2-(-3)}+\left(2-\sqrt{7}\right)^{2}-\dfrac{12}{3}\cdot 10^{-2+3}$

$=10^{-2+3}+\left[2^2-2\cdot 2\cdot \sqrt{7}+\left(\sqrt{7}\right)^2\right]-4\cdot 10$

$=10+\left(4-4 \sqrt{7}+7\right)-40$

$=10+11-4\sqrt{7} - 40$

$=21-40-4\sqrt{7}$

$=\boxed{-19-4\sqrt{7}}$