a) \(\sqrt{x}\left(\frac{1}{\sqrt{x}}+1\right)\)

b)\(x^2\left(\sqrt{x}+1\right)-\left(\sqrt{x}+1\right)\)

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

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

k mình nha

a, \(x^2-7=x^2-\left(\sqrt{7}\right)^2=\left(x-\sqrt{7}\right)\left(x+\sqrt{7}\right)\)

b, \(x^2-2\sqrt{2}x+2=x^2-2\sqrt{2}x+\left(\sqrt{2}\right)^2=\left(x-\sqrt{2}\right)^2\)

c, \(x^2+2\sqrt{13}x+13=x^2+2\sqrt{13}x+\left(\sqrt{13}\right)^2=\left(x+\sqrt{13}\right)^2\)

a) \(x^2-7=x^2-\left(\sqrt{7}\right)^2=\left(x-\sqrt{7}\right)\left(x+\sqrt{7}\right)\)

b) \(x^2-2\sqrt{2}x+2=x^2-2.x.\sqrt{2}+\left(\sqrt{2}\right)^2=\left(x-\sqrt{2}\right)^2\)

c) \(x^2+2\sqrt{13}x+13=x^2+2.x.\sqrt{13}+\left(\sqrt{13}\right)^2=\left(x+\sqrt{13}\right)^2\)

\(\sqrt{ab}\left(\sqrt{a}-\sqrt{b}\right)\)

\(\left(\sqrt{x}-\sqrt{y}\right)^2\)

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

\(\left(\sqrt{15}x-4\right)^2\)

\(a\sqrt{a}-b\sqrt{b}\)

\(=\sqrt{a^3}-\sqrt{b^3}\)

\(=\left(\sqrt{a}-\sqrt{b}\right)\left(a+\sqrt{ab}+b\right)\)

\(x+y-2\sqrt{xy}\)

\(=\left(\sqrt{x}-\sqrt{y}\right)^2\)

1/ \(x-6\sqrt{x}-8=\left(\sqrt{x}-3+\sqrt{17}\right)\left(\sqrt{x}-3-\sqrt{17}\right)\)

2/ Bài này làm gì còn phân tích được nữa.

a.\(\sqrt{x}\left(\sqrt{x}-2\right)\)

b.\(\left(3-\sqrt{x}\right)\left(2+\sqrt{x}\right)\)

a, \(x-\sqrt{x}\)= \(\sqrt{x}.\left(\sqrt{x}-1\right)\)

b, 3x+6\(\sqrt{x}\)= \(\sqrt{x}.\left(3\sqrt{x}+6\right)\)

c, x+2\(\sqrt{x}+1\)= \(\left(\sqrt{x}\right)^2+2\sqrt{x}+1=\left(\sqrt{x}+1\right)^2\)

d, \(3x-5\sqrt{x}+2=3x-3\sqrt{x}-2\sqrt{x}+2\)

=\(3\sqrt{x}.\left(\sqrt{x}-1\right)-2.\left(\sqrt{x}-1\right)\)

=\(\left(3\sqrt{x}-2\right).\left(\sqrt{x}-1\right)\)

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

\(=x-\sqrt{x}-2=x+\sqrt{x}-2\sqrt{x}-2\)

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

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

cái trên thì chịu 

cái dưới <=> \(\sqrt{xy}\left(\sqrt{x}+\sqrt{y}\right)+\left(\sqrt{x}+\sqrt{y}\right)\left(\sqrt{x}-\sqrt{y}\right)=\left(\sqrt{x}+\sqrt{y}\right)\left(\sqrt{xy}+\sqrt{x}-\sqrt{y}\right)\)

a) \(x-2\sqrt{x-1}-a^2=\left(x-1\right)-2\sqrt{x-1}+1-a^2=\left(\sqrt{x-1}-1\right)^2-a^2=\left(\sqrt{x-1}-a-1\right)\left(\sqrt{x-1}+a-1\right)\)

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