Answer:
2
Step-by-step explanation:
Step-by-step explanation:
Remove the parentheses: 15a²-6ab+8a²+20+5ab-31+a²-ab Combine like terms: 24a²-2ab-11
Answer: 24a²-2ab-11
40 is the answer =3 hope it works
So sorry fir it being this late but the answer is B