Question

đặt nhân tử chung
\(2x-7\sqrt{x}+3\)

Answer 1

\(2x-7\sqrt{x}+3\\ =2x-6\sqrt{x}-\sqrt{x}+3\\ =\left(2x-6\sqrt{x}\right)-\left(\sqrt{x}-3\right)\\ =2\sqrt{x}\left(\sqrt{x}-3\right)-\left(\sqrt{x}-3\right)\\ =\left(\sqrt{x}-3\right)\left(2\sqrt{x}-1\right)\)

Answer 2

=2x-6căn x-căn x+3

=2*căn x*(căn x-3)-(căn x-3)

=(căn x-3)(2*căn x-1)

Answer 3

\(2x-7\sqrt{x}+3\)

\(=\left(2x-\sqrt{x}\right)-\left(6\sqrt{x}-3\right)\)

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

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