Question

Doar a,b,c,d si e va rog e urgent!​

Answer 1

Răspuns:

Explicație pas cu pas:

a)

=6√15

-

b)

=8√100

=8√10²

= 8*10

= 80

-

c)

=8√54

=8√3²*6 ..........prelungesti radicalul

= 8*3√6

=24√6

-

d)

=24√6

Answer 2

$\it a)\ \ 2\sqrt3\cdot3\sqrt5=(2\cdot3)\cdot(\sqrt3\cdot\sqrt5)=6\sqrt{15}\\ \\ \\b)\ \ 4\sqrt5\cdot2\sqrt{20}=(4\cdot2)\cdot(\sqrt5\cdot\sqrt{20})=8\sqrt{100}=8\cdot10=80\\ \\ \\c)\ \ 2\sqrt3\cdot4\sqrt{18}=(2\cdot4)\cdot(\sqrt3\cdot\sqrt{18})=8\sqrt{54}=8\sqrt{9\cdot6}=8\cdot3\sqrt6=24\sqrt6$