Question

When 5√20 is written in simplest radical form , the result is k√5 what is the value of K

A : 20
B : 10
C : 7
D : 4

Answer 1

Explanation:

√20 can be rewritten as the product of two radicals: √4√5,

and √4 = 2.

Thus, 5√20 = 5(2)√5 = 10√5. Thus, B: 10 is correct; k = 10.