Question

[trungkien]

Rút gọn

\(A:5\sqrt{x}-4y\sqrt{25x^3}+5x\sqrt{16xy^2}-2\sqrt{9x}\)

\(B:5x\sqrt{64xy^3}-\sqrt{3}\sqrt{12x^3y^3}+2xy\sqrt{9xy}-5y\sqrt{81x^3y}\)

\(C:\sqrt{\frac{x}{y}}+\sqrt{xy}+\frac{x}{y}\sqrt{\frac{y}{x}}\)