Answer:
A.1
Step-by-step explanation:
d=1
1*9=9
a
Answer: 15n³-105n²+2n+16/6n²-42n
n+8/3n²-21n +5n/2
2(n+8)+5n(3n²-21n)/2(3n²-21n)
2n+16+15n³-105n²/6n²-42n
15n³-105n²+2n+16/6n²-42n