Respostas

2013-09-22T21:07:49-03:00
(a + 3 )² = (6x²y²)
a² + 6 + 9 = 6x² y²
a² +15 = 6x²y²
a²= 6x²y²-15
a² = 3( 2x²y² -5)

(a + 3 )²       a² + 6 +9           a²+15
_______   ___________      ________
(6x²y²)       (6x²y²)                6x²y²