Odpowiedzi

2010-03-10T22:56:39+01:00
X3+3x2-4=0
3x+6x-4=0 /+4
9x=4 /:9
x=4/9

x3+2x2-16x-32=0
3x+4x-16x-32=0 /+32
-9x=32 /:(-9)
x=-32/9
x=-3 5/9

x3-5x+4=0
3x-5x+4=0 /-4
-2x=-4 /:(-2)
x=2