Question

Which pair of radicals is a pair of like radicals?

\[9\sqrt{2} and -9\sqrt{3}\]

\[7\sqrt{5} and 7\sqrt{3}\]

\[5\sqrt{6} and 6\sqrt{5}\]

\[3\sqrt{7} and 11\sqrt{7}\]

Answer 1

very good with codes at the beginning, but you can use ~ for space.

Answer 2

like radicals are the ones that can be added (saying, the once that are like terms)

Answer 3

Cant they all be added?

Answer 4

Where do you see the same radical (square root) in both terms here? In which answer choice?

Answer 5

C?

Answer 6

no, because the first one has 6 and the second one has 5, and you can't add them

Answer 7

b?

Answer 8

or D?

Answer 9

which one do you choose b or d?

Answer 10

D

Answer 11

which ones have the same square root?

Answer 12

yes, D

Answer 13

And in fact when you add them you get \(\large\color{black}{ \displaystyle 3\sqrt{7}+11\sqrt{7} =14\sqrt{7}}\)

Answer 14

how?

Answer 15

oh. Nvm

Answer 16

My math was wrong