Respostas

2014-08-19T17:41:47-03:00
A) (3a)²-2.3a.5+5² = 9a²-30a+25

b) 5²-2.5.4a+(4a)² = 25-40a+14a²

c) (3x)²-2.3x.2y+(2y)² = 9x²-12xy+4y²

d) (3a²)²- 2.3a².1+1² = 9a^4-6a²+1

e) x²-2.x.1/2+(1/2)² = x² - x + 1/4
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