3X²-4X=2 X²-4/3X=2/3 (X-2/3)²=10/9 X-2/3=±√10/3, X1=(2+√10)/3,X2=(2-√10)/3, X²-4√2X+(2√2)²=-6+8 (X-2√2)²=2 X-2√2=±√2 X1=3√2,X2=√2.
