Answers

2016-06-28T16:34:13+08:00
1. t² + 2/3t + 1/9 = (t+1/3)²
2.r² - 7r + 49/4 = (r - 7/2)²
3.s² +3/4s + 9/64 = (s + 3/8)²
4.w² - 5w +25/4 = (w - 5/2)²

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