Answers

2016-06-26T05:17:14+08:00
11.18t^10
12.(6+t)^9
13.3y^7
14.-6x^8
15.-6x^4y^3
16.x^7
17.-20x^8
18.27 s^9t^24
19.-t^11
20.-2a^10
21.x^4y^6
22.-x^8/4
23.
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