Question

Simplify squar root of 8* square root of 10

a. 4*sq rt of 5
b. 16* sq rt of 5
c. 10* sq rt of 2
d. 40* sq rt of 2

Answer 1

A ?

Answer 2

\[\sqrt 8\times\sqrt{10}\]
\[=\sqrt{4\times2}{\times\sqrt{5\times2}}\]

Answer 3

sqrt(10)*sqrt(8) = sqrt(80) = sqrt(20*4) = sqrt(4*5*4) = 2sqrt(4*5) = 4sqrt(5)

Answer 4

yes A