Question

用配方解3x^2－1＝6x

Answer 1

3x^2-6x=1

x^2-2x=1/3

x^2-2x+1=1+1/3=4/3

(x-1)^2=(±2√3/3)^2

x-1=±2√3/3

x=1±2√3/3

x1=(3+2√3)/3,x2=(3-2√3)/2