simplify 3√10+7√15-6√10-4√15

A.3√10-3√15
B.3√15-3√10
C.3√30-3√20
D.3√20-3√20


Please don't give any other answer, just pick from the options

Respuesta :

3√10+7√15-6√10-4√15 =
(7
√15-4√15)+(3√10-6√10) = 
3√15 - 3√10

B.3√15-3√10