Respuesta :

[tex]3\sqrt[]{7}-2\sqrt[]{7}[/tex]

Factor with square root of 7 as common factor:

[tex](3-2)\cdot\sqrt[]{7}[/tex]

Substract 3-2:

[tex]1\sqrt[]{7}=\sqrt[]{7}[/tex]The exact answer is √7, in decimal form is approximately: 2.645