Problem C. 826. (November 2005)
C. 826. Solve the following equation:
(5 pont)
Deadline expired on December 15, 2005.
Sorry, the solution is available only in Hungarian. Google translation
Alakítsuk az egyenletet (x1):
3x3-(x3+x2+x)=2(x3-1),
x2+x-2=0.
x1=-2, x2=1.
A kikötés miatt csak az x=-2 a megoldása az egyenletnek.
Statistics:
539 students sent a solution. 5 points: 419 students. 4 points: 57 students. 3 points: 31 students. 2 points: 6 students. 1 point: 2 students. 0 point: 6 students. Unfair, not evaluated: 18 solutionss.
Problems in Mathematics of KöMaL, November 2005