SOLUTION: if determinant of |a b c | |l m n | |p q r | is 2 then what is the value of |6a 3b 15c | |2l m 5n |

Algebra ->  Matrices-and-determiminant -> SOLUTION: if determinant of |a b c | |l m n | |p q r | is 2 then what is the value of |6a 3b 15c | |2l m 5n |      Log On


   

Question 432361: if determinant of |a b c |
|l m n |
|p q r |
is 2 then what is the value of |6a 3b 15c |
|2l m 5n |
|2p q 5r |
?
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
, after factoring 2 from the 1st column, and 5 from the 3rd column.
= 2%2A5%2A3%2Aabs%28matrix%283%2C3%2C+a%2C+b%2C+c%2C+l%2C+m%2Cn%2Cp%2C+q%2C+r%29%29, after factoring 3 from the 1st row.
Hence the value of the determinant is 2*5*3*2 = 60.