Question

 giúp mình với mình cần gấp ạ

Answer 1

a) \(x-8\sqrt{x}\)

\(=\sqrt{x}\left(\sqrt{x}-8\right)\)

b) \(x+3\sqrt{x}+2\)

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

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

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

c) \(x-16\)

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

\(=\left(\sqrt{x}+4\right)\left(\sqrt{x}-4\right)\)

d) \(8x\sqrt{x}-64\)

\(=\left(2\sqrt{x}\right)^3-4^3\)

\(=\left(2\sqrt{x}-4\right)\left(4x+8\sqrt{x}+16\right)\)

Answer 2

e: x+8căn x+16=(căn x+4)^2

f: =x(căn x+3)-7(căn x+3)

=(căn x+3)(x-7)

g: =2căn x(2căn x-1)

h: =x-2căn x-9căn x+18

=(căn x-2)(căn x-9)

i: =2x-4căn x+3căn x-6

=(căn x-2)(2căn x+3)

k: =(3căn x+4)^2