Respostas

2014-08-13T21:38:27-03:00
3√y + y = 10
3√ y = 10 - y
(3√y)² = (10 - y )²
9y = y² - 20 y + 100
y² +29y + 100 = 0

raizes da equacao = 25 e 4
substituindo as raizes na expressao =
y = 4