Respostas

2014-04-14T19:06:51-03:00
(x+y)²= x² + 2xy + y²
(5x²=1)²=25x^4-10x²+1²
(c³+6)²=c^6+12c³ + 6²
(wz+3)²=w²z²+6wz +3²
(3m-5n)² 9m²-30mn + 25n²

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