Question

CALCULE E SIMPLIFIQUE:
A)√3 . √15
B)√20 . √9/20
C)√0,4 . √10
D)√8 . √1/2

OBS: AS RESPOSTAS DEVER DAR ASSIM.

A)3√5
B)3
C)2
D)2

Answer 1

a)√3 . √15 = √45 
decompoe o 45
45/3
15/3
5/5
1

√45 =√3² .5 = 3√5

B)√20 . √9/20 = √20.9/20 = √9 = 3

C)√0,4 . √10 = √4 = 2

D)√8 . √1/2 = √8/2 = √4 = 2