( 3n - 2 ) * ( 4n + 1 ) = 12n² + 3n - 8n - 2 = 12n² - 5n - 2.
(3n-2)(4n+1)=12n^2+3n-8n-2=12n^2+3n-8n-2=12n^2-5n-2.
( 3n - 2 ) * ( 4n + 1 ) = 12n² + 3n - 8n - 2 = 12n² - 5n - 2.
(3n-2)(4n+1)=12n^2+3n-8n-2=12n^2+3n-8n-2=12n^2-5n-2.