Question

写出下列一元二次方程的根,填空题,四个,

Answer 1

（1）x1=0 x2=(根2)/3（2）x1=(根3)/2 x2=-(根3)/2（3）x1=-1 x2=-4（4）x1=-8 x2=63x^2-6x=2x^2-2x=2/3x^2-2x+1=5/3(x-1)^2=15/9x-1=±(根15)/3x1=1+(根15)/3 x2=1-(根15)/3