Respostas

2014-03-14T13:21:10-03:00
A = -1
B= -7
C= -2
d = distancia entre os 2 pontos
d^{2} =a ^{2} +b ^{2} \\d= \sqrt{a ^{2} +b ^{2} }

d (a,b) = -1² + -7² 
d(a,b) = √50

d(B,C)= = -7² + -2²
d(B,C)=  49+4
d(B,C)= √53

d(A,C)= -1² + -2²
d(A,C)= √5

d(C,A)= √5