Answer:
18√5 or Decimal Form: 40.24922359…
Step-by-step explanation:
2n - 4
expand brackets
8n - 4 - 6n
collect like terms
2.2-0.6=1.6
1.6*81=129.6
129.6/2=64.8
Answer: 64.8
332
332 divided by 4 + 75 is 158