Question

Sa se determine solutiile intregi ale ecuatiilor:
a). x³-3x²+2=0

Answer 1

a=1
b=-3
c=2
Δ= 9- 8  =1

x1,x2= 3 +/- √1 /2=   (3 + / - 1)/2

x1=(3+1)/2=4/2=2
x2=(3-1)/2= 2/2=1

x³-3x²+2=(x-2)(x-1)=0

x-2=0  x-1=0
x=2    x=1