Answer:
3 r 2 +9 r − 120
Explanation:
Write the problem as a mathematical expression.
3 r ^2 + 9 r− 120
Factor 3 out of 3 r ^2 + 9 r − 120 .
Factor 3 out of 3 r ^2 .
3 ( r ^2 ) + 9 r − 120
Factor 3 out of 9 r .
3 ( r^ 2 ) + 3( 3 r ) − 120
Factor 3 out of − 120 .
3 r ^2 + 3( 3 r ) + 3 ⋅ − 40
Factor 3 out of 3 r 2 + 3 ( 3 r ) .
3 ( r^2 + 3 r )+ 3 ⋅ − 40
Factor 3 out of 3 ( r 2 + 3 r ) + 3 ⋅ − 40 .
3 ( r^ 2 + 3 r − 40 )
Factor.
Factor r^ 2 + 3 r − 40 using the AC method.
3 ( ( r − 5 ) ( r + 8 ) )
Remove unnecessary parentheses.
3 ( r − 5 ) ( r + 8 )
Hope this helps! :)