Question

Rút gọn bt : (\(\frac{1-y\sqrt{y}}{1-\sqrt{y}}\)+\(\sqrt{y}\))(\(\frac{1-\sqrt{y}}{1-y}\))\(^2\)

Answer 1

tth

Answer 2

@Lê Thị Thục Hiền @Nguyễn Việt Lâm

Answer 3

@Vũ Minh Tuấn

Answer 4

tth chê ko làm à

Answer 5

\(\left(\frac{1-y\sqrt{y}}{1-\sqrt{y}}+\sqrt{y}\right)\left(\frac{1-\sqrt{y}}{1-y}\right)^2\)

\(=\left(\frac{1-\sqrt{y}^3}{1-\sqrt{y}}+\sqrt{y}\right)\left(\frac{1-\sqrt{y}}{\left(1-\sqrt{y}\right)\left(1+\sqrt{y}\right)}\right)^2\)

\(=\left(\frac{\left(1-\sqrt{y}\right)\left(1+\sqrt{y}+y\right)}{1-\sqrt{y}}+\sqrt{y}\right)\left(\frac{1}{1+\sqrt{y}}\right)^2\)

\(\)\(=\left(1+\sqrt{y}+y+\sqrt{y}\right).\frac{1}{(1+\sqrt{y})^2}\)

\(=\left(1+2\sqrt{y}+y\right).\frac{1}{1+2\sqrt{y}+y}\)

\(=1\)

tth lần sau làm đi đừng để a mất niềm tin vào chú nữa ok