Respostas

2013-06-19T14:56:31-03:00

x,x+2,x+4

 

(x+4)²=(x+2)²+x²

x²+8x+16=x²+4x+4+x²

x²+8x+16=2x²+4x+4

2x²-x²+4x-8x+4-16 = 0

x²-4x-12=0x1=-3

x2=6

 

x=6

x+2=8

x+4=10