Question

17) x - \(\sqrt{x}\) -2

18) x- 3\(\sqrt{x}\)+ 2

19) x\(\sqrt{x}\)- x + \(\sqrt{x}\)-1

20) x\(\sqrt{x}\)+ y\(\sqrt{y}\)+ x - y

Answer 1

17: \(x-\sqrt{x}-2=\left(\sqrt{x}-2\right)\left(\sqrt{x}+1\right)\)

18: \(x-3\sqrt{x}+2=\left(\sqrt{x}-1\right)\left(\sqrt{x}-2\right)\)

19: \(x\sqrt{x}-x+\sqrt{x}-1=\left(\sqrt{x}-1\right)\left(x+1\right)\)

20: \(x\sqrt{x}+y\sqrt{y}+x-y\)

\(=\left(\sqrt{x}+\sqrt{y}\right)\left(x-\sqrt{xy}+y\right)+\left(\sqrt{x}+\sqrt{y}\right)\left(\sqrt{x}-\sqrt{y}\right)\)

\(=\left(\sqrt{x}+\sqrt{y}\right)\left(x-\sqrt{xy}+y+\sqrt{x}-\sqrt{y}\right)\)

Answer 2

\(17,=\left(\sqrt{x}-2\right)\left(\sqrt{x}+1\right)\\ 18,=\left(\sqrt{x}-2\right)\left(\sqrt{x}-1\right)\\ 19,=\left(x+1\right)\left(\sqrt{x}-1\right)\\ 20,=???\)

bn xem lại đề câu 20 nha

tik mik nha