Question

PRA HOJEEEE!!!
A) 2


B) 0


C) 6


D) 8


E) 4

Answer 1

Resposta:

a=2

b=-10

c=6

x=(-(-10)±V(-10)²-4.2.6))/2.2 = (10±V(100-48))/4 = (10±V52)/4 = (10±2V13)/4

S= (10+2V13+10-2V13)/4 => S=20/4 S=5

p=((10+2V13)/4).((10-2V13)/4) =(100-4.13)/16 = (100-52)/16 = 48/16 P=3

S+P =5+3 =8

R:D)8