Question

problemele 6 si 11 va rog. urgent!!!

Answer 1

6.
102:x=c,rest r
c=2r
r < x
=>x=25
102:25=4 rest 2

11.
66:x=c,rest 6 =>cx+6=66 =>cx=60
c+x=19 =>c=19-x
(19-x)x=60
19x - x^2 - 60 = 0 sau x^2 - 19x + 60 = 0
delta = b^2 - 4ac = 361 - 240 = 121 => rad.delta = 11
x1 = (19-11)/2 = 4
x2 = (19+11)/2 = 15