Answers

2016-07-01T22:06:38+08:00
2.1 Factoring: a3-125b3 (a-b) • (a2 +ab +b(a-b)•(a2+ab+b2) = a3+a2b+ab2-ba2-b2a-b3 = a3+(a2b-ba2)+(ab2-b2a)-b3 = a3+0+0+b3 = a3+b3 (a - 5b) • (a2 + 5ab + 25b2) 2.2 Factoring a2 + 5ab + 25b2 Answer: (a - 5b) • (a2 + 5ab + 25b2)
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