Respostas

2013-10-03T13:49:10-03:00
 \sqrt{x + 3} = 8

x + 3 = 8²
x = 64 - 3
x = 61

 \sqrt{5x + 3} =  \sqrt{2x + 4}
5x + 3 = 2x + 4
5x - 2x = 4 - 3
3x = 1
x = 1/3
1 1 1