Respostas

2013-06-12T23:38:41-03:00

Olá,
x = raiz (3/5) + raiz(5/3)
x^2 = 3/5 + 2 . raiz (3/5) . raiz(5/3) + 5/3
x^2 = 3/5 + 2 . raiz(3/5 . 5/3) + 5/3
x^2 = 3/5 + 2 . raiz(1) + 5/3
x^2 = 3/5 + 2 . 1 + 5/3
x^2 = 3/5 + 2 + 5/3 ------> tira o mmc
15x^2/15 = 9/15 + 30/15 + 25/15
15x^2 = 9 + 30 + 25
15x^2 = 64
x^2 = 64/15
x = raiz(64/15)
x = raiz(64)/raiz(15)
x = 8/raiz(15)
Racionalizando
x = 8/raiz(15) . raiz(15)/raiz(15)
x = 8 . raiz(15)/15

2013-06-13T00:41:25-03:00