37. 27x^3-12x^2
40. 5x^4y^6+30x^5y^4
49. 10x-1x-2
You should write a report on Google Docs( if you have Chrome) or Mircosoft Word ( if you have mac). Do the steps one by one. If they're is a rubric... follow it. May I ask what grade you are in?
Answer:
C. It made steel cheaper.
Explanation
