Respostas

2014-04-14T21:01:39-03:00
4x²- 9/5 = 5² - 9/6+3
4x²- 9/5 = 5² - 9/9
9*4x² - 9 = 5² - 9 *5
36x²-81 = 25x²-45
36x²-25x²=-45 + 81
11x²= 36
x²= 36/11
x= 6(raiz)11/11
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