Answer:
B, C, and D
Explanation:
CORRECT ANSWERS
B.
You have to use the distributive property. Multiply the 4 by the 4a in the parenthesis. You get 16a. Same with the 4 and 5. Multiply them. You get 20. Keep the plus and forget the parenthesis ever existed.
C.
See how it has 12a and a plus and then a 4a? Forget about the 20 in the middle. 12a+4a=16a. You keep the second plus and put the 20 back in. Now it's the same as a C.
D.
Same distributive property. Multiply 2 by 8a. You get 16a. Multiply 2 by 10. You get 20. Keep the plus and forget that the parenthesis ever existed. Again you get 16a+20
INCORRECT ANSWERS
A.
A never finished the distributive property. It never multiplied the 4 by the 5.
E.
5+4=9. Where did it get the 9 from? It just makes no sense!