Question

Find the exact value of the radical expression in simplest form.

Answer 1

\[2\sqrt{7x} + \sqrt{7x} - 3\sqrt{7x} - 7\]

Answer 2

the first three things are like terms.

Answer 3

I got to \[-1\sqrt{7x}\], but what do I do next?

Answer 4

2+1-3=?



\(\Large\color{blue}{ \rm 2\sqrt{7x}+\sqrt{7x}-3\sqrt{7x} =}\)

\(\Large\color{blue}{ \rm 2\sqrt{7x}+1\sqrt{7x}-3\sqrt{7x}=? }\)

Answer 5

\[\sqrt{21x}\]

Answer 6

wait

Answer 7

\[\sqrt{14x}\]

Answer 8

you dont do anything to the radicand when adding or subtracting
only the number outside the radical