Respostas

2014-05-15T21:02:08-03:00
x(x+2)=35\\x^2+2x=35\\x^2+2x-35=0\\\
\\\Delta=2^2-4.1.(-35)\\\Delta=144\\
\\x= \frac{-2\pm12}{2} \\
\\x'=5\\\
\\x''=-7


x(x+2)=35\\5(5+2)=35\\35=35

Os  números são : 5 e 7
1 5 1