Question

se m e n são razes de x²-6x+10=0, entao 1/m +1/n vale?

Answer 1

delta=(-6)^2-4.1.10
delta=36-40
delta=16
m=-(-6)+raizde16/2.1
m=6+4/2
m=5

n=-(-6)-raizde16/2.1
n=6-4/2
n=1

1/m+1/n=1/5+1/1
1/m+1/n=6/5