MR-158. zadatak

Rešiti sledeću jednačinu:

x-x+10x+3=2

x-x+10x+3=2

x-x+10x+3=2

x-x+10x+3-2=0

x·x+3-x+10-2·x+3x+3=0
x2+3x-x-10-2x-6x+3=0
x2-16x+3=0
x2-16=0
x2=16
x=±16
x=±4

x1=4;x2=-4