vt lại câu vs từ trog ngoặc:

1, I live in Ha Noi. My friend lives in HCM city. ( same city)

2, Would you please give me a hand? (mind)

3, It is interesting for me to study English culture. (find)

4, We spent nearly a week making these toys. (took)

5, Peter isn't trying to solve his financial problems. (effort)

Rút gọn P = (\(\frac{x-y}{\sqrt{x}-\sqrt{y}}+\frac{\sqrt{x^3}-\sqrt{y^3}}{y-x}):\frac{\left(\sqrt{x}-\sqrt{y}\right)^2+\sqrt{xy}}{\sqrt{x}+\sqrt{y}}\) .

CMR: P \(\ge0\)

tìm x bt: \(x^2-\frac{\sqrt{5}}{\sqrt{5}-2}.x-\left(6+2\sqrt{5}\right)=0\)

Tìm giá trị nguyên lớn nhất của P = \(\frac{4}{25-x}\)