1003020807

SubArea: 
Points and vectors
Level: 
A
Project ID: 
1003020807
Accepted: 
1
Clonable: 
0
Easy: 
0
Find the set of all values of a parameter a∈R such that the distance of the points [a;3;−2] and [1;1;4] equals 7.
{4;−2}
{4;2}
∅
{0}