SOLUTION: -3n(5n-4)+3n how do i do these i a struggling badly

Algebra ->  Expressions -> SOLUTION: -3n(5n-4)+3n how do i do these i a struggling badly       Log On


   

Question 790849: -3n(5n-4)+3n
how do i do these i a struggling badly
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
-3n(5n-4) + 3n
multiply what inside the bracket by -3n, remove the brackets, you have
-15n^2 + 12n + 3n
-15n^2 + 15n
Factor out -15n
-15n(n-1)