(1)x2﹣2x﹣1=0 (2) 2(x﹣3)=3x(x﹣3)
(1)x2−3x−14=0 (2)xx−4=8−2x
(1)x2+6x=9 (2)3x(x−3)=3−x
(1)x2-5x+1=0
(2)3(x-2)2=x(x-2)