[tex]d)\sqrt{75} -\sqrt{300}=\sqrt{25*3}-\sqrt{100*3}=5\sqrt{3}-10\sqrt{3}=-5\sqrt{3}\\e)\sqrt{72}+\sqrt{50}-\sqrt{32}=\sqrt{36*2}+\sqrt{25*2}-\sqrt{16*2}=6\sqrt{2}+5\sqrt{2}-4\sqrt{2}=7\sqrt{2}[/tex]
