Question

vă rog ajutaţi mă chiar am nevoie..la c şi d vă rog rapid​

Answer 1

$c)\\(5\sqrt{3} ^{14}:(-\sqrt{75} )^{16}=(5\sqrt{3}) ^{14}:(-5\sqrt{3} )^{16}=(-5\sqrt{3} )^{-2}=-\frac{1}{5\sqrt{3} })^2 =(-\frac{\sqrt{3} }{15})^2=\frac{3}{225} =\frac{1}{75}$

$d)\\(-2\sqrt{7} )^7:(\sqrt{28}) ^6=(-2\sqrt{7} )^7:(2\sqrt{7}) ^6=(-2\sqrt{7} )^1=-2\sqrt{7}$