Bài 4: Liên hệ giữa phép chia và phép khai phương

a.\(\dfrac{\sqrt{2}}{\sqrt{18}}=\sqrt{\dfrac{2}{18}}=\sqrt{\dfrac{1}{9}}=\dfrac{1}{3}\)

b.\(\dfrac{\sqrt{15}}{\sqrt{735}}=\sqrt{\dfrac{15}{735}}=\sqrt{\dfrac{1}{49}}=\dfrac{1}{7}\)

c.\(\dfrac{\sqrt{12500}}{\sqrt{500}}=\sqrt{\dfrac{12500}{500}}=\sqrt{25}=5\)

d.\(\dfrac{\sqrt{6^5}}{\sqrt{2^3.33^5}}=\sqrt{\dfrac{2^5.3^5}{2^3.3^5}}=\sqrt{2^2}=2\)

a) ; b) ;

c) ; d) .