The following expression has been simplified. 72r2 – 19 +592 + 20 — 2p2
1.7272 + 572 272 – 19 + 20
2.7572 +1
Which statement can be used to justify step 2?
Commutative Property
Associative Property
Combine Like Terms

This concept of fate became the new meaning of "ming." so the idea of "tian ming," the mandate of heaven, was first used by the kings of the  zhou dynasty,  who  justified their overthrow of the shang by saying that heaven had punished the shang for immorality and transferred its favor to the  zhou.