Question

va rog repede dau coroana si 100 de puncte va rog repede ​

Answer 1

$\it a)\ 3\sqrt5\cdot2\sqrt{20}=6\sqrt{5\cdot20}=6\cdot\sqrt{100}=6\cdot10=60\\ \\ b)\ \ =+40\sqrt{100}=40\cdot10=400\\ \\ c)\ \sqrt{12}=\sqrt{4\cdot3}=2\sqrt3\\ \\ \sqrt{20}=\sqrt{4\cdot5}=2\sqrt5\\ \\ \sqrt{75}=\sqrt{25\cdot3}=5\sqrt3\\ \\ \sqrt{125}=\sqrt{25\cdot5}=5\sqrt5\\ \\ \sqrt{27}=\sqrt{9\cdot3}=3\sqrt3$