The Answer is
50.88
Hope this helps!
Answer:
Step-by-step explanation:
The choice third ; a=9 , c= 18
(x+3)( 3x^2 +5)
3x^3+9x^2+5x+15
Split into two groups
3x^3+9x^2 +5x+15
Factor 3x^2 out of the first group and 5 out of the second group
3x^2 ( x+3) + 5(x+3)
Factor out x+3
24
